US2939377A - Hot air register - Google Patents

Hot air register Download PDF

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Publication number
US2939377A
US2939377A US767376A US76737658A US2939377A US 2939377 A US2939377 A US 2939377A US 767376 A US767376 A US 767376A US 76737658 A US76737658 A US 76737658A US 2939377 A US2939377 A US 2939377A
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Prior art keywords
register
housing
frame
grill
plate
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Expired - Lifetime
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US767376A
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Stach Helen
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D5/00—Hot-air central heating systems; Exhaust gas central heating systems

Definitions

  • my invention pertains to a household heating system in which air, heated by a furnace, rises through ducts and passes through outlets or registers in the walls of the respective rooms into said rooms.
  • a register includes a housing having a rectangular frame at the front portion thereof said front portion projecting into the room in which the register is located.
  • the register is mounted at the outlet end of an air duct and is of a size to exceed the area of the opening of said duct.
  • a grill or screen Disposed within said frame or forming a part thereof is a grill or screen through which the air from the duet may pass into the room.
  • the register includes also a damper which is located behind the grill and which may be operated from insidethe room 'by means of -a handle extending outwardly.
  • the housing of the register is permanently secured to the wall and no access may be had to the interior of the register without disconnecting the whole front portion of the housing including the frame part. This procedure may result in cracking the plaster in portions back of the frame and adjoining said frame.
  • the air passing lthrough a register will deposit in its interior, including the damper, a quantity of dust, and as the front partion of the register, including said grill, is permanently set in its place, there is no way of getting into 'the interior of the housing for the purpose of removing the dust.
  • a removal of the housing or the front portion of the housing, as the case may be, may result in cracking the plaster of the wall in portions in which the register is set, 'back of said frame, and in portions adjoining said frame.
  • Fig. 1 is a front elevational view of the register
  • Fig. 2 is a Vertical sectional view of the register on line 2-2 of Fig. 1, the view including a part of an air duet;
  • Fig. 3 is a' sectional view of the register on line 3-3 of Fig. 1;
  • Fig. 4 is a front elevational view of the frame of a modified register
  • Fig. 5 is a front elevational view of a grill which is adapted to be used in conjunetion with 'the frame shown in Fig. 4.
  • the register shown in the drawings includes a housing which is mounted close to the fioor level 11 of a room, the front portion of the housing projeeting forwardly of the surface 12 of
  • the housing includes two rectaugular side walls 14, a top wall 15, and a bottom wall or 'base 16. At the front the housing is defined .by a marginal wall which forms arectangular frame.
  • the frame is composed of two Vertical sides 17, a top portion 18 integrally connected to said sides, and a bottom portion 19 being disp'osed in the same plane.
  • Each of the side members 17 includes a marginal portion or flange 20 which is bent inwardly so that said marginal portion is disposed parallel to the respective side wall '14 of the housing (Fig. 3).
  • Bach of said marginal portions 20 is provided with a Vertical guding groove or channel 21 to which I shall refer again.
  • the top portion 18 of the frame includes a marginal portion which is bent inwardly to form a horizontal ledge 22 (Fig. 2).
  • the ledge contains a slot 23 which extends from one marginal portion 20 to the other.
  • the marginal portion 24 of the lower or bottom member 19 of the frame is bent inwardly to a position parallel to the bottom 16 of the housing, and contains a slot 25 extending from one marginal portion 20 to the other.
  • a grill which has the form of a rectangular plate having straight Vertical side edges 27. At the top the marginal portion of the plate is turned into a horizontal member 28 which serves as a grip for the handling of the plate. The bottom edge of the plate is defined by a straight horizont-al line 29.
  • the plate contains a central Vertical slot 30 which extends from a point close to the top of the plate downwardly to a point close to its bottom edge '29.
  • the plate contains a plurality of slots 31 which in this case are Vertical but in place of which the plate may contain any type of openings, as the only object of having these openings is to provide outle'ts from the duct into the room in which the register is located.
  • the side edges of the plate fit into the respective channels 21 of -the frame, while the lower end of the plate is adapted to enter into the slot 25 in the horizontal portion 24 of the bottom member 19 of the frame.
  • a flat damper 33 which normally covers the opening 34 in the back of the housing of the register.
  • the opening forms an inlet into the housing from an air duct 35.
  • The. damper' is provided with a handle 36 which passes through the aboVe-named slot 30 in the grill plate for manual operation of the damper from inside the room in which the register is located.
  • FIG. 4 A modified structure of the front portion of the housing and a modified grill is shown in Fig. 4.
  • the grill plate 40 is provided with a single hole 41 at each side.
  • the front end of the housing has the form of a frame 42 which, along its inner edge, has a marginal depressed portion 43 for reception of the grill plate.
  • a hole 44 in each side member of the frame serves for reception of fastening means, such as screws, which may be passed through the holes 41 in lthe grill and
  • fastening means such as screws
  • the grill plate contains a Vertical slot 45 for accommodation of a handle, such as handle 36 shown in Fig. 2, and a plurality of slots 46 for passage of air therethrough.
  • a housing having two Vertical side walls, a bottom wall, and a top wall, the top wall i td the Planeof saidzvwalls, and aganfturned'axially inf wardlto Vfu'ni azflange' dispoSedin planeparallel to said Vcorresponclin ;Wallfthe Vfraineforming arrectanglev of smallerfheight andwidththan
  • h V:2. In'ra hot air registen'ahousing having two Vertical side walls, a bottom wall, 'anda top wall, the top wall havingv'a transverse slot 'extending from one ;side wall tothe other, said housing including a front frame integrally Vformed therewith by having the marginal..
  • each said wall turned inwardly at right angles to the plane of rsaid walls, and again turned axially in- Ward to Vfal-m a fianae dispofied 'a Plane parallel to said 'corresponding walls, the frame forming a' rectangle of smaller height and width than the height and width of the housing, the flange at the top of the frame having a transverse slot in Vertical coplanar alignment with the slot in the top Wall of the housing, each fiange disposed parallel to the side walls' VVofV the housing having a Vertical groove therein in' 'a' plane passing through said Slots, and a fiat grillerplate, ⁇ slidahlyv fitting into the slots from :above andl fitting along its Vertical ,edges into the grooves in the respective fianges, the grillefllate extending normally the-top to the hottpm of' the frame but being adapted to be Vslidably ⁇ withdrawn upwardly to disclose the full'aredefined -by the frame.

Description

June 7, 1960 H. sTAcH HOT AIR REGISTER Filed om. 15, 1958 INVENTOR. ,'cejn/ Smc/l MM W ,47'7'0'0/5/ United States Patent:`
Hor Am REGISTER Helen Stach, 15273 Fordham, Detroit, Mich.
Filed od. 15, 1958, ser. No. 767,376 i z ciaims. (ci. 98-101) In general my invention pertains to a household heating system in which air, heated by a furnace, rises through ducts and passes through outlets or registers in the walls of the respective rooms into said rooms.
More specifically, the invention is directed to the said outlets commonly known as registers. As a rule, a register includes a housing having a rectangular frame at the front portion thereof said front portion projecting into the room in which the register is located. The register is mounted at the outlet end of an air duct and is of a size to exceed the area of the opening of said duct.
Disposed within said frame or forming a part thereof is a grill or screen through which the air from the duet may pass into the room. The register includes also a damper which is located behind the grill and which may be operated from insidethe room 'by means of -a handle extending outwardly.
The housing of the register is permanently secured to the wall and no access may be had to the interior of the register without disconnecting the whole front portion of the housing including the frame part. This procedure may result in cracking the plaster in portions back of the frame and adjoining said frame.
In time, the air passing lthrough a register will deposit in its interior, including the damper, a quantity of dust, and as the front partion of the register, including said grill, is permanently set in its place, there is no way of getting into 'the interior of the housing for the purpose of removing the dust. A removal of the housing or the front portion of the housing, as the case may be, may result in cracking the plaster of the wall in portions in which the register is set, 'back of said frame, and in portions adjoining said frame.
In view thereof, I have devised a register in which the grill at the front of the housing is a separate element from other elements thereof, said grill being of a type which may be easily and readily Withdrawn from its normal location to afford access to the interior of said register.
I shall now describe my improvement with respect to the accompanying drawings in which:
Fig. 1 is a front elevational view of the register;
Fig. 2 is a Vertical sectional view of the register on line 2-2 of Fig. 1, the view including a part of an air duet;
Fig. 3 is a' sectional view of the register on line 3-3 of Fig. 1;
Fig. 4 is a front elevational view of the frame of a modified register;
Fig. 5 is a front elevational view of a grill which is adapted to be used in conjunetion with 'the frame shown in Fig. 4.
Similar numerals refer to similar parts throughout the several views.
The register shown in the drawings includes a housing which is mounted close to the fioor level 11 of a room, the front portion of the housing projeeting forwardly of the surface 12 of |'the wall 13 of the room in which the register is located.
2,939,377 Patented June 7, 1960 rice The housing includes two rectaugular side walls 14, a top wall 15, and a bottom wall or 'base 16. At the front the housing is defined .by a marginal wall which forms arectangular frame. The frame is composed of two Vertical sides 17, a top portion 18 integrally connected to said sides, and a bottom portion 19 being disp'osed in the same plane. Each of the side members 17 includes a marginal portion or flange 20 which is bent inwardly so that said marginal portion is disposed parallel to the respective side wall '14 of the housing (Fig. 3). Bach of said marginal portions 20 is provided with a Vertical guding groove or channel 21 to which I shall refer again. The top portion 18 of the frame includes a marginal portion which is bent inwardly to form a horizontal ledge 22 (Fig. 2). The ledge contains a slot 23 which extends from one marginal portion 20 to the other.
The marginal portion 24 of the lower or bottom member 19 of the frame is bent inwardly to a position parallel to the bottom 16 of the housing, and contains a slot 25 extending from one marginal portion 20 to the other.
' The slots 23 and 25 are disposed in the same Vertical plane which also passes through the guiding Vertical grooves 21. v
Fitting into the slot 23 from above is a grill which has the form of a rectangular plate having straight Vertical side edges 27. At the top the marginal portion of the plate is turned into a horizontal member 28 which serves as a grip for the handling of the plate. The bottom edge of the plate is defined by a straight horizont-al line 29. The plate contains a central Vertical slot 30 which extends from a point close to the top of the plate downwardly to a point close to its bottom edge '29. In addition, the plate contains a plurality of slots 31 which in this case are Vertical but in place of which the plate may contain any type of openings, as the only object of having these openings is to provide outle'ts from the duct into the room in which the register is located.
The side edges of the plate fit into the respective channels 21 of -the frame, while the lower end of the plate is adapted to enter into the slot 25 in the horizontal portion 24 of the bottom member 19 of the frame.
Hinged within the upper portion of the housing of the register, as shown at 32, and extending downwardly, is a flat damper 33 which normally covers the opening 34 in the back of the housing of the register. The opening forms an inlet into the housing from an air duct 35. The. damper' is provided with a handle 36 which passes through the aboVe-named slot 30 in the grill plate for manual operation of the damper from inside the room in which the register is located.
A modified structure of the front portion of the housing and a modified grill is shown in Fig. 4. The grill plate 40 is provided with a single hole 41 at each side. The front end of the housing has the form of a frame 42 which, along its inner edge, has a marginal depressed portion 43 for reception of the grill plate. A hole 44 in each side member of the frame serves for reception of fastening means, such as screws, which may be passed through the holes 41 in lthe grill and |threaded into the respective holes 44. The manner of securing the grill to the plate is only suggestive, as any other means may be used for the purpose. A -hinged grill would 'be one example.
It will be noted that the grill plate contains a Vertical slot 45 for accommodation of a handle, such as handle 36 shown in Fig. 2, and a plurality of slots 46 for passage of air therethrough.
After having described my improvement, what I wish to claim is as follows:
1. In a hot air register, a housing having two Vertical side walls, a bottom wall, and a top wall, the top wall i td the Planeof saidzvwalls, and aganfturned'axially inf wardlto Vfu'ni azflange' dispoSedin planeparallel to said Vcorresponclin ;Wallfthe Vfraineforming arrectanglev of smallerfheight andwidththan |the 'height andV width .of
' thehousingrtheflange `at the top of therfranie .having a transverse slot Vin. Vertical coplanar alignment 'with vthe lotfin `the 'top wall of the housinig, while each fiange, vdiiposed parallel tothe respective side wall of the housing having'avertical groove 'in the plane of said slots, and a, fl'at-grille plate'slidably fitting into ythe slots from above and slidably fitting along its side'edg'es into .the respective ,grooves, the 'plate-,being adapted to be withdrawn upv'ajrdly to .disclose'` in full,V the area defined by said frame. i
h V:2. :In'ra hot air registen'ahousing having two Vertical side walls, a bottom wall, 'anda top wall, the top wall havingv'a transverse slot 'extending from one ;side wall tothe other, said housing including a front frame integrally Vformed therewith by having the marginal.. porltion of each said wall turned inwardly at right angles to the plane of rsaid walls, and again turned axially in- Ward to Vfal-m a fianae dispofied 'a Plane parallel to said 'corresponding walls, the frame forming a' rectangle of smaller height and width than the height and width of the housing, the flange at the top of the frame having a transverse slot in Vertical coplanar alignment with the slot in the top Wall of the housing, each fiange disposed parallel to the side walls' VVofV the housing having a Vertical groove therein in' 'a' plane passing through said Slots, and a fiat grillerplate, `slidahlyv fitting into the slots from :above andl fitting along its Vertical ,edges into the grooves in the respective fianges, the grillefllate extending normally the-top to the hottpm of' the frame but being adapted to be Vslidably` withdrawn upwardly to disclose the full'aredefined -by the frame.
References Cited in the file of this patent UNITED STATES PATENTS 493,321 Weis V Mar.v 14, 18.93 827,603 BeQuette July 31, 1906 '1,`815,346 'Covell July 21, 1'931 l2,470,375 Schwartzberg May 17, 1949 1 FOREIGN PATENTS' i i 29,203 Australia Sept. 177, V1931
US767376A 1958-10-15 1958-10-15 Hot air register Expired - Lifetime US2939377A (en)

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Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4625632A (en) * 1985-05-13 1986-12-02 Owl Flex, Inc. Damper and register box
US5427146A (en) * 1994-06-27 1995-06-27 Bakken; Gary M. Linearly adjustable fluid damper
US6192640B1 (en) * 1996-12-16 2001-02-27 Darryl L. Snyder Double divisible connector frame for mounting air grilles and louvers to heating and cooling duct outlets
USD778424S1 (en) * 2015-01-08 2017-02-07 Broan-Nutone Llc Ventilator grill
USD778425S1 (en) * 2015-01-08 2017-02-07 Broan-Nutone Llc Ventilator grill
USD779050S1 (en) * 2015-01-08 2017-02-14 Broan-Nutone Llc Ventilator grill
USD784512S1 (en) * 2015-01-08 2017-04-18 Broan-Nutone Llc Ventilator grill
USD784511S1 (en) * 2015-01-08 2017-04-18 Broan-Nutone Llc Ventilator grill
USD804627S1 (en) 2015-05-19 2017-12-05 Broan-Nutone Llc Vent hood
US9874369B2 (en) 2013-11-21 2018-01-23 Nejat Babur Constant total orifice area damper
USD814009S1 (en) 2015-05-19 2018-03-27 Broan-Nutone, Llc Vent hood
USD815724S1 (en) 2015-09-14 2018-04-17 Broan-Nutone Llc Ventilation grill
USD816206S1 (en) 2015-09-14 2018-04-24 Broan-Nutone Llc Ventilation grill
USD820428S1 (en) 2013-06-20 2018-06-12 Broan-Nutone Llc Range hood
USD822821S1 (en) 2015-09-14 2018-07-10 Broan-Nutone, Llc Ventilation grill
USD826391S1 (en) 2015-05-19 2018-08-21 Broan-Nutone Llc Vent hood
USD836765S1 (en) 2015-08-31 2018-12-25 Broan-Nutone Llc Vent hood
USD837966S1 (en) 2008-01-02 2019-01-08 Broan-Nutone Llc Grille
USD850601S1 (en) 2014-05-01 2019-06-04 Broan-Nutone Llc Grill element
USD858734S1 (en) 2015-05-19 2019-09-03 Broan-Nutone Llc Vent hood
USD861639S1 (en) 2015-10-06 2019-10-01 Broan-Nutone Llc Wireless speaker
USD881375S1 (en) 2018-05-22 2020-04-14 Broan-Nutone Llc Grille assembly for a bathroom ventilation fan
USD883467S1 (en) 2015-09-14 2020-05-05 Broan-Nutone Llc Ventilation grill
USD884869S1 (en) 2015-09-14 2020-05-19 Broan-Nutone Llc Ventilation grill
USD886983S1 (en) 2015-09-14 2020-06-09 Broan-Nutone Llc Ventilation grill
USD897521S1 (en) 2016-10-14 2020-09-29 Broan-Nutone Llc Vent hood
USD898896S1 (en) 2019-01-22 2020-10-13 Broan-Nutone Llc Ventilation grille
USD899582S1 (en) 2019-01-22 2020-10-20 Broan-Nutone Llc Ventilation grille
USD902372S1 (en) 2018-11-28 2020-11-17 Broan-Nutone Llc Ventilation grille
USD904594S1 (en) 2015-09-14 2020-12-08 Broan-Nutone Llc Ventilation grill
USD908200S1 (en) 2015-09-14 2021-01-19 Broan-Nutone Llc Ventilation grill
USD908861S1 (en) 2018-11-28 2021-01-26 Broan-Nutone Llc Ventilation grille
USD909560S1 (en) 2018-11-28 2021-02-02 Broan-Nutone Llc Ventilation grille
USD943730S1 (en) 2018-11-28 2022-02-15 Broan-Nutone Llc Ventilation grille
USD946136S1 (en) 2018-11-28 2022-03-15 Broan-Nutone Llc Ventilation grille
USD946137S1 (en) 2019-05-01 2022-03-15 Broan-Nutone Llc Ventilation grille
US11300305B2 (en) 2019-02-15 2022-04-12 Broan-Nutone Llc Grille attachment feature for a ventilation system
US11326792B2 (en) 2019-02-15 2022-05-10 Broan-Nutone Llc Grille attachment system for a ventilation system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US493321A (en) * 1893-03-14 Ventxlator
US827603A (en) * 1905-07-24 1906-07-31 John W Be Quette Ventilator.
US1815346A (en) * 1930-07-07 1931-07-21 Hart & Cooley Mfg Company Furnace register
AU2920330A (en) * 1930-09-24 1931-09-17 Wunderlich Limited Improvements in and relating to ventilators
US2470375A (en) * 1946-02-13 1949-05-17 Alter L Schwartzberg Ventilator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US493321A (en) * 1893-03-14 Ventxlator
US827603A (en) * 1905-07-24 1906-07-31 John W Be Quette Ventilator.
US1815346A (en) * 1930-07-07 1931-07-21 Hart & Cooley Mfg Company Furnace register
AU2920330A (en) * 1930-09-24 1931-09-17 Wunderlich Limited Improvements in and relating to ventilators
US2470375A (en) * 1946-02-13 1949-05-17 Alter L Schwartzberg Ventilator

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4625632A (en) * 1985-05-13 1986-12-02 Owl Flex, Inc. Damper and register box
US5427146A (en) * 1994-06-27 1995-06-27 Bakken; Gary M. Linearly adjustable fluid damper
US6192640B1 (en) * 1996-12-16 2001-02-27 Darryl L. Snyder Double divisible connector frame for mounting air grilles and louvers to heating and cooling duct outlets
USD837966S1 (en) 2008-01-02 2019-01-08 Broan-Nutone Llc Grille
USD820428S1 (en) 2013-06-20 2018-06-12 Broan-Nutone Llc Range hood
US9874369B2 (en) 2013-11-21 2018-01-23 Nejat Babur Constant total orifice area damper
USD850601S1 (en) 2014-05-01 2019-06-04 Broan-Nutone Llc Grill element
USD778424S1 (en) * 2015-01-08 2017-02-07 Broan-Nutone Llc Ventilator grill
USD778425S1 (en) * 2015-01-08 2017-02-07 Broan-Nutone Llc Ventilator grill
USD779050S1 (en) * 2015-01-08 2017-02-14 Broan-Nutone Llc Ventilator grill
USD784512S1 (en) * 2015-01-08 2017-04-18 Broan-Nutone Llc Ventilator grill
USD784511S1 (en) * 2015-01-08 2017-04-18 Broan-Nutone Llc Ventilator grill
USD804627S1 (en) 2015-05-19 2017-12-05 Broan-Nutone Llc Vent hood
USD858734S1 (en) 2015-05-19 2019-09-03 Broan-Nutone Llc Vent hood
USD814009S1 (en) 2015-05-19 2018-03-27 Broan-Nutone, Llc Vent hood
USD826391S1 (en) 2015-05-19 2018-08-21 Broan-Nutone Llc Vent hood
USD836765S1 (en) 2015-08-31 2018-12-25 Broan-Nutone Llc Vent hood
USD904594S1 (en) 2015-09-14 2020-12-08 Broan-Nutone Llc Ventilation grill
USD815724S1 (en) 2015-09-14 2018-04-17 Broan-Nutone Llc Ventilation grill
USD816206S1 (en) 2015-09-14 2018-04-24 Broan-Nutone Llc Ventilation grill
USD883467S1 (en) 2015-09-14 2020-05-05 Broan-Nutone Llc Ventilation grill
USD884869S1 (en) 2015-09-14 2020-05-19 Broan-Nutone Llc Ventilation grill
USD886983S1 (en) 2015-09-14 2020-06-09 Broan-Nutone Llc Ventilation grill
USD822821S1 (en) 2015-09-14 2018-07-10 Broan-Nutone, Llc Ventilation grill
USD908200S1 (en) 2015-09-14 2021-01-19 Broan-Nutone Llc Ventilation grill
USD861639S1 (en) 2015-10-06 2019-10-01 Broan-Nutone Llc Wireless speaker
USD897521S1 (en) 2016-10-14 2020-09-29 Broan-Nutone Llc Vent hood
USD881375S1 (en) 2018-05-22 2020-04-14 Broan-Nutone Llc Grille assembly for a bathroom ventilation fan
USD895783S1 (en) 2018-05-22 2020-09-08 Broan-Nutone Llc Grille assembly for a bathroom ventilation fan
USD909560S1 (en) 2018-11-28 2021-02-02 Broan-Nutone Llc Ventilation grille
USD902372S1 (en) 2018-11-28 2020-11-17 Broan-Nutone Llc Ventilation grille
USD908861S1 (en) 2018-11-28 2021-01-26 Broan-Nutone Llc Ventilation grille
USD943730S1 (en) 2018-11-28 2022-02-15 Broan-Nutone Llc Ventilation grille
USD946136S1 (en) 2018-11-28 2022-03-15 Broan-Nutone Llc Ventilation grille
USD899582S1 (en) 2019-01-22 2020-10-20 Broan-Nutone Llc Ventilation grille
USD898896S1 (en) 2019-01-22 2020-10-13 Broan-Nutone Llc Ventilation grille
US11300305B2 (en) 2019-02-15 2022-04-12 Broan-Nutone Llc Grille attachment feature for a ventilation system
US11326792B2 (en) 2019-02-15 2022-05-10 Broan-Nutone Llc Grille attachment system for a ventilation system
US11732914B2 (en) 2019-02-15 2023-08-22 Broan-Nutone Llc Grille attachment feature for a ventilation system
USD946137S1 (en) 2019-05-01 2022-03-15 Broan-Nutone Llc Ventilation grille

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