Shop Ceiling Diffuser Sizes

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$39.99
$49.99
BUILDMART - 12X6 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
26
20% off
$39.99
$49.99
BUILDMART - 12X6 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
26
$58.00
Havaco 2'X2' Lay-In 3 Cone Supply With 10" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
Amazon.com
Free shipping
$58.00
Havaco 2'X2' Lay-In 3 Cone Supply With 10" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
Amazon.com
Free shipping
$56.99
$68.99
BUILDMART - 14X8 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
17% off
$56.99
$68.99
BUILDMART - 14X8 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
$46.34
Rectorseal Truaire Grille/Damper 81914 Plastic Ceiling Diffuser With Incorporated Ceiling Box, Easy Installation, HVAC, 8X8 4 Way Grille/Damper
Amazon.com
189
Free shipping
$46.34
Rectorseal Truaire Grille/Damper 81914 Plastic Ceiling Diffuser With Incorporated Ceiling Box, Easy Installation, HVAC, 8X8 4 Way Grille/Damper
Amazon.com
189
$15.95
Three-Way Plastic Side Wall/Ceiling Register In White 14"W X 6"H For Duct Opening (Outside Dimension Is 15.75"W X 8"H)
Amazon.com
$15.95
Three-Way Plastic Side Wall/Ceiling Register In White 14"W X 6"H For Duct Opening (Outside Dimension Is 15.75"W X 8"H)
Amazon.com
$49.99
$63.99
BUILDMART - 12X8 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
21% off
$49.99
$63.99
BUILDMART - 12X8 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
$81.50
$101.90
RPEP - Steel Perforated Ceiling Diffuser/Return W Polifoam Metallic Gray
Advantage Mechanical Supply
20% off
$81.50
$101.90
RPEP - Steel Perforated Ceiling Diffuser/Return W Polifoam Metallic Gray
Advantage Mechanical Supply
$229.99
$299.99
BUILDMART - 24X24 MUD-IN Air Vent Cover - Drywall MUD IN White Air Vent - MUD Linear Slot Diffuser - Register Grille For Ceiling And Walls - Texas Buildmart
Linear Slot Diffusers
23% off
$229.99
$299.99
BUILDMART - 24X24 MUD-IN Air Vent Cover - Drywall MUD IN White Air Vent - MUD Linear Slot Diffuser - Register Grille For Ceiling And Walls - Texas Buildmart
Linear Slot Diffusers
$58.75
Diffuser: Ceiling, 23 3/4 in H, 23 3/4 in W, Lay-In, 12 in Duct, Steel, Square Cone, White Model: 4MJV5
Grainger
$58.75
Diffuser: Ceiling, 23 3/4 in H, 23 3/4 in W, Lay-In, 12 in Duct, Steel, Square Cone, White Model: 4MJV5
Grainger
$4,079.87
$4,895.84
Four Way Throw Right Angle Concentric Diffuser With Drum Louver 21.5" / 12" / 58" / 18" / 50" X 22" / 42" X 42" / 48" X 6" / 5200 -10800
Advantage Mechanical Supply
16% off
$4,079.87
$4,895.84
Four Way Throw Right Angle Concentric Diffuser With Drum Louver 21.5" / 12" / 58" / 18" / 50" X 22" / 42" X 42" / 48" X 6" / 5200 -10800
Advantage Mechanical Supply
$59.10
Diffuser: Ceiling, 23 3/4 in H, 23 3/4 in W, Lay-In, 6 in Duct, Steel, Square Cone, White Model: 4MJV2
Grainger
$59.10
Diffuser: Ceiling, 23 3/4 in H, 23 3/4 in W, Lay-In, 6 in Duct, Steel, Square Cone, White Model: 4MJV2
Grainger
$34.82
Airtec MV2S 2-Way White Ceiling Diffuser
Skip The Warehouse
$34.82
Airtec MV2S 2-Way White Ceiling Diffuser
Skip The Warehouse
$57.91
Diffuser: Ceiling, 23 3/4 in H, 23 3/4 in W, Lay-In, 8 in Duct, Steel, Square Cone, White Model: 4MJV3
Grainger
$57.91
Diffuser: Ceiling, 23 3/4 in H, 23 3/4 in W, Lay-In, 8 in Duct, Steel, Square Cone, White Model: 4MJV3
Grainger
$79.99
$99.99
BUILDMART - 36" White Linear Slot Diffuser - 2 Slot - Double Slot - Decorative Air Vent - Modern AC Vent Cover For Ceiling, Walls & Floors - Texas Buildmart
Linear Slot Diffusers
20% off
$79.99
$99.99
BUILDMART - 36" White Linear Slot Diffuser - 2 Slot - Double Slot - Decorative Air Vent - Modern AC Vent Cover For Ceiling, Walls & Floors - Texas Buildmart
Linear Slot Diffusers
$100.20
$125.30
Round Supply Ceiling Diffuser - DCF 06" / White / Aluminum
Advantage Mechanical Supply
20% off
$100.20
$125.30
Round Supply Ceiling Diffuser - DCF 06" / White / Aluminum
Advantage Mechanical Supply
$99.99
$139.99
BUILDMART - 72" Mud-In Linear Slot Diffuser - 1 Slot - Air Vent Cover - Drywall MUD IN White Air Vent - MUD Linear Slot Diffuser - Register Grille For Ceiling And Walls - Texas Buildmart
Linear Slot Diffusers
28% off
$99.99
$139.99
BUILDMART - 72" Mud-In Linear Slot Diffuser - 1 Slot - Air Vent Cover - Drywall MUD IN White Air Vent - MUD Linear Slot Diffuser - Register Grille For Ceiling And Walls - Texas Buildmart
Linear Slot Diffusers
$51.28
Airtec 81914 MV4 Ceiling Diffuser W/ 4-Way Grille (8" X 8") | Supplyhouse.Com
SupplyHouse.com
20
$51.28
Airtec 81914 MV4 Ceiling Diffuser W/ 4-Way Grille (8" X 8") | Supplyhouse.Com
SupplyHouse.com
20
$110.00
1-1/3 ft. X 4 ft. Dropped White Acrylic Diffuser
Home Depot
431
Free shipping
$110.00
1-1/3 ft. X 4 ft. Dropped White Acrylic Diffuser
Home Depot
431
$72.68
Hart & Cooley 12952 Series 24 10" (Wall Opening Size) Step Down Square Ceiling Diffuser (Steel) | Supplyhouse.Com
SupplyHouse.com
$72.68
Hart & Cooley 12952 Series 24 10" (Wall Opening Size) Step Down Square Ceiling Diffuser (Steel) | Supplyhouse.Com
SupplyHouse.com
$36.56
Airtec MV4S 4-Way White Ceiling Diffuser
Skip The Warehouse
$36.56
Airtec MV4S 4-Way White Ceiling Diffuser
Skip The Warehouse
$44.13
Airtec MV2 2-Way White Ceiling Diffuser
Skip The Warehouse
7
$44.13
Airtec MV2 2-Way White Ceiling Diffuser
Skip The Warehouse
7
$64.85
Bluefin DF2W14-14 14" X 14" (Wall Opening Size) 4-Way Aluminum Square Ceiling Diffuser (White) | Supplyhouse.Com
SupplyHouse.com
$64.85
Bluefin DF2W14-14 14" X 14" (Wall Opening Size) 4-Way Aluminum Square Ceiling Diffuser (White) | Supplyhouse.Com
SupplyHouse.com
$46.34
12.5" Round White Plastic Standard Air Grille Air Diffuser Bu Airtec Rectorseal
1800ceiling.com
$46.34
12.5" Round White Plastic Standard Air Grille Air Diffuser Bu Airtec Rectorseal
1800ceiling.com
$278.99
$349.00
Metal Diffuser Bell Pole 14" Pendant, Black/Tumbled Brass | Pottery Barn
Pottery Barn
20% off
$278.99
$349.00
Metal Diffuser Bell Pole 14" Pendant, Black/Tumbled Brass | Pottery Barn
Pottery Barn
$96.99
10.44 in. X 48.22 in. Dropped White Acrylic Diffuser
Home Depot
Free shipping
$96.99
10.44 in. X 48.22 in. Dropped White Acrylic Diffuser
Home Depot
Free shipping
$278.99
$349.00
Metal Diffuser Bell Pole 14" Pendant, White/Tumbled Brass | Pottery Barn
Pottery Barn
20% off
$278.99
$349.00
Metal Diffuser Bell Pole 14" Pendant, White/Tumbled Brass | Pottery Barn
Pottery Barn
$208.99
$299.00
Metal Diffuser Bell Pole 14" Pendant, Blue/Tumbled Brass | Pottery Barn
Pottery Barn
30% off
$208.99
$299.00
Metal Diffuser Bell Pole 14" Pendant, Blue/Tumbled Brass | Pottery Barn
Pottery Barn
$70.00
16 in. X 8 in. Aluminum Wall/Ceiling Linear Slot Diffuser In White
Home Depot
Free shipping
$70.00
16 in. X 8 in. Aluminum Wall/Ceiling Linear Slot Diffuser In White
Home Depot
Free shipping
$24.99
Plastic Ceiling Air Diverter For 2'X2' Diffuser 1800Ceiling.Com
1800ceiling.com
$24.99
Plastic Ceiling Air Diverter For 2'X2' Diffuser 1800Ceiling.Com
1800ceiling.com
$42.49
Airmate 800 10" White Round Ceiling Diffuser 01790010CW
HVAC WD
$42.49
Airmate 800 10" White Round Ceiling Diffuser 01790010CW
HVAC WD
$92.95
Elite Daylight Systems Diffuser Ceiling Kit - 10 In., Flat White Diffuser
Roofing Direct
$92.95
Elite Daylight Systems Diffuser Ceiling Kit - 10 In., Flat White Diffuser
Roofing Direct
$243.95
Elite Daylight Systems Diffuser Ceiling Kit - 21 In., Flat Prismatic Diffuser
Roofing Direct
$243.95
Elite Daylight Systems Diffuser Ceiling Kit - 21 In., Flat Prismatic Diffuser
Roofing Direct
$243.95
Elite Daylight Systems Diffuser Ceiling Kit - 21 In., Flat Maxlum Diffuser
Roofing Direct
$243.95
Elite Daylight Systems Diffuser Ceiling Kit - 21 In., Flat Maxlum Diffuser
Roofing Direct
$299.50
Ameriflow Round Ceiling Diffuser 10 Inch Duct Diameter - Pkg Qty 10, 1500W10
Global Industrial
$299.50
Ameriflow Round Ceiling Diffuser 10 Inch Duct Diameter - Pkg Qty 10, 1500W10
Global Industrial
$172.84
Airguide AVP-42PLT 12X12 4-WAY Ceiling Diffuser WHITE
HVAC WD
$172.84
Airguide AVP-42PLT 12X12 4-WAY Ceiling Diffuser WHITE
HVAC WD
$69.95
Plaque Style Plastic Air Diffuser American Louver
1800ceiling.com
$69.95
Plaque Style Plastic Air Diffuser American Louver
1800ceiling.com
16 Ideas and Free Plans for DIY Sound Diffuser Panel
2:15
16 Ideas and Free Plans for DIY Sound Diffuser Panel
Apr 1, 2019
bettersoundproofing.com
HVAC Diffuser Sizing Guide: CFM Chart & Selection - aircondlounge
HVAC Diffuser Sizing Guide: CFM Chart & Selection - aircondlounge
Mar 26, 2024
aircondlounge.com
What Size Light Bulb Goes In A Ceiling Fan
What Size Light Bulb Goes In A Ceiling Fan
Apr 4, 2025
interior-designy.com
How to Replace Ceiling Air Diffusers
How to Replace Ceiling Air Diffusers
Oct 1, 2012
weekand.com
Round White Ceiling Air Vent Register,4 Sizes Ceiling Diffuser Exhaust Supply Valve Air Vent Anemostat Ventilation Ducting Hose Cover (3.93inch)
0:24
Round White Ceiling Air Vent Register,4 Sizes Ceiling Diffuser Exhaust Supply Valve Air Vent Anemostat Ventilation Ducting Hose Cover (3.93inch)
1 viewsNov 27, 2019
amazon
Round White Ceiling Air Vent Register,4 Sizes Ceiling Diffuser Exhaust Supply Valve Air Vent Anemostat Ventilation Ducting Hose Cover (2.95inch)
0:12
Round White Ceiling Air Vent Register,4 Sizes Ceiling Diffuser Exhaust Supply Valve Air Vent Anemostat Ventilation Ducting Hose Cover (2.95inch)
65 viewsNov 27, 2019
amazon
How to Measure for a Ceiling Fan
1:51
How to Measure for a Ceiling Fan
Jun 3, 2020
HOMEDEPOT
TMRA - Round Ceiling Diffuser
0:25
TMRA - Round Ceiling Diffuser
40.2K viewsJun 9, 2016
YouTubeTitusHVAC
InviAir Architectural Air Diffusers
2:44
InviAir Architectural Air Diffusers
512.7K viewsFeb 3, 2021
YouTubeInviAir Diffusers
FlowBar Border 22 IOM
4:21
FlowBar Border 22 IOM
44.3K viewsMar 10, 2020
YouTubeTitusHVAC
HVAC Training - Variable Air Volume Diffusers
27:17
HVAC Training - Variable Air Volume Diffusers
13.3K viewsJun 21, 2019
YouTubePrice Industries
Need to Know? Ceiling Fans
0:46
Need to Know? Ceiling Fans
64K viewsAug 8, 2017
YouTubeLowe's Home Improvement
How to Install Ceiling Grid
15:45
How to Install Ceiling Grid
616.6K viewsAug 2, 2018
YouTubeMitchell Acoustical
Product Overview: P19 P20 Ceiling Diffusers
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Product Overview: P19 P20 Ceiling Diffusers
41.5K viewsFeb 10, 2015
YouTubeContinental Industries
How to Measure Vents | Flair
2:12
How to Measure Vents | Flair
99.4K viewsJun 23, 2017
YouTubeFlair
Avair close-able diffuser
0:16
Avair close-able diffuser
36.6K viewsNov 17, 2011
YouTubeInsulationindustrie1
Making A Quadratic Diffuser From Plywood - Acoustics
6:30
Making A Quadratic Diffuser From Plywood - Acoustics
417K viewsJan 27, 2021
YouTubeJohn Heisz - I Build It
How to use a Diffuser
7:11
How to use a Diffuser
41.5K viewsOct 23, 2018
YouTubeKays Cottage Kitchen (THE COTTAGE by Kay)
How to Properly Select Diffusers
5:58
How to Properly Select Diffusers
10.9K viewsJun 26, 2020
YouTubeThe Engineering Tutorial
VELUX Install Video - Curb Mounted Skylights
22:23
VELUX Install Video - Curb Mounted Skylights
339.1K viewsMay 1, 2015
YouTubeVELUX USA
How To Install Suspended Ceilings (Drywall Grid Systems)
1:56
How To Install Suspended Ceilings (Drywall Grid Systems)
61.9K viewsDec 8, 2014
YouTubewww.strictlyceilings.com
HVAC Training - Linear Slots Diffuser Selection Design
10:05
HVAC Training - Linear Slots Diffuser Selection Design
19.3K viewsNov 13, 2020
YouTubeHVAC SIMPLIFIED
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YouTubeFacility Management Academy اكاديمية ادارة المرافق
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4:35
How to choose diffuser for LED profile?
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YouTubeMyledy
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How to install LED aluminium profile surface light ceiling design_LED strip light install #
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YouTubeSri Hari Creations
How To Build Basic Suspended Ceiling Drops In A Basement
2:00
How To Build Basic Suspended Ceiling Drops In A Basement
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YouTubewww.strictlyceilings.com
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0:38
Square Ceiling Diffuser with Plenum box
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YouTubeGMCAIR HVAC
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1:10
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2013 10 22 ceiling diffuser
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YouTubeDURATITE
See more

Shop Ceiling Diffuser Sizes

Sponsored
About our ads
$39.99
$49.99
BUILDMART - 12X6 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
26
20% off
$39.99
$49.99
BUILDMART - 12X6 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
26
$58.00
Havaco 2'X2' Lay-In 3 Cone Supply With 10" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
Amazon.com
Free shipping
$58.00
Havaco 2'X2' Lay-In 3 Cone Supply With 10" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
Amazon.com
Free shipping
$56.99
$68.99
BUILDMART - 14X8 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
17% off
$56.99
$68.99
BUILDMART - 14X8 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
$46.34
Rectorseal Truaire Grille/Damper 81914 Plastic Ceiling Diffuser With Incorporated Ceiling Box, Easy Installation, HVAC, 8X8 4 Way Grille/Damper
Amazon.com
189
Free shipping
$46.34
Rectorseal Truaire Grille/Damper 81914 Plastic Ceiling Diffuser With Incorporated Ceiling Box, Easy Installation, HVAC, 8X8 4 Way Grille/Damper
Amazon.com
189
$15.95
Three-Way Plastic Side Wall/Ceiling Register In White 14"W X 6"H For Duct Opening (Outside Dimension Is 15.75"W X 8"H)
Amazon.com
$15.95
Three-Way Plastic Side Wall/Ceiling Register In White 14"W X 6"H For Duct Opening (Outside Dimension Is 15.75"W X 8"H)
Amazon.com
$49.99
$63.99
BUILDMART - 12X8 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
21% off
$49.99
$63.99
BUILDMART - 12X8 White Modern AC Vent Cover - Decorative Air Vent - Standard Linear Slot Diffuser - Register Grille For Ceiling, Walls & Floors - Texas Buildmart
Texas Buildmart
$81.50
$101.90
RPEP - Steel Perforated Ceiling Diffuser/Return W Polifoam Metallic Gray
Advantage Mechanical Supply
20% off
$81.50
$101.90
RPEP - Steel Perforated Ceiling Diffuser/Return W Polifoam Metallic Gray
Advantage Mechanical Supply
$229.99
$299.99
BUILDMART - 24X24 MUD-IN Air Vent Cover - Drywall MUD IN White Air Vent - MUD Linear Slot Diffuser - Register Grille For Ceiling And Walls - Texas Buildmart
Linear Slot Diffusers
23% off
$229.99
$299.99
BUILDMART - 24X24 MUD-IN Air Vent Cover - Drywall MUD IN White Air Vent - MUD Linear Slot Diffuser - Register Grille For Ceiling And Walls - Texas Buildmart
Linear Slot Diffusers
$58.75
Diffuser: Ceiling, 23 3/4 in H, 23 3/4 in W, Lay-In, 12 in Duct, Steel, Square Cone, White Model: 4MJV5
Grainger
$58.75
Diffuser: Ceiling, 23 3/4 in H, 23 3/4 in W, Lay-In, 12 in Duct, Steel, Square Cone, White Model: 4MJV5
Grainger
$4,079.87
$4,895.84
Four Way Throw Right Angle Concentric Diffuser With Drum Louver 21.5" / 12" / 58" / 18" / 50" X 22" / 42" X 42" / 48" X 6" / 5200 -10800
Advantage Mechanical Supply
16% off
$4,079.87
$4,895.84
Four Way Throw Right Angle Concentric Diffuser With Drum Louver 21.5" / 12" / 58" / 18" / 50" X 22" / 42" X 42" / 48" X 6" / 5200 -10800
Advantage Mechanical Supply
$59.10
Diffuser: Ceiling, 23 3/4 in H, 23 3/4 in W, Lay-In, 6 in Duct, Steel, Square Cone, White Model: 4MJV2
Grainger
$59.10
Diffuser: Ceiling, 23 3/4 in H, 23 3/4 in W, Lay-In, 6 in Duct, Steel, Square Cone, White Model: 4MJV2
Grainger
$34.82
Airtec MV2S 2-Way White Ceiling Diffuser
Skip The Warehouse
$34.82
Airtec MV2S 2-Way White Ceiling Diffuser
Skip The Warehouse
$57.91
Diffuser: Ceiling, 23 3/4 in H, 23 3/4 in W, Lay-In, 8 in Duct, Steel, Square Cone, White Model: 4MJV3
Grainger
$57.91
Diffuser: Ceiling, 23 3/4 in H, 23 3/4 in W, Lay-In, 8 in Duct, Steel, Square Cone, White Model: 4MJV3
Grainger
$79.99
$99.99
BUILDMART - 36" White Linear Slot Diffuser - 2 Slot - Double Slot - Decorative Air Vent - Modern AC Vent Cover For Ceiling, Walls & Floors - Texas Buildmart
Linear Slot Diffusers
20% off
$79.99
$99.99
BUILDMART - 36" White Linear Slot Diffuser - 2 Slot - Double Slot - Decorative Air Vent - Modern AC Vent Cover For Ceiling, Walls & Floors - Texas Buildmart
Linear Slot Diffusers
$100.20
$125.30
Round Supply Ceiling Diffuser - DCF 06" / White / Aluminum
Advantage Mechanical Supply
20% off
$100.20
$125.30
Round Supply Ceiling Diffuser - DCF 06" / White / Aluminum
Advantage Mechanical Supply
$99.99
$139.99
BUILDMART - 72" Mud-In Linear Slot Diffuser - 1 Slot - Air Vent Cover - Drywall MUD IN White Air Vent - MUD Linear Slot Diffuser - Register Grille For Ceiling And Walls - Texas Buildmart
Linear Slot Diffusers
28% off
$99.99
$139.99
BUILDMART - 72" Mud-In Linear Slot Diffuser - 1 Slot - Air Vent Cover - Drywall MUD IN White Air Vent - MUD Linear Slot Diffuser - Register Grille For Ceiling And Walls - Texas Buildmart
Linear Slot Diffusers
$51.28
Airtec 81914 MV4 Ceiling Diffuser W/ 4-Way Grille (8" X 8") | Supplyhouse.Com
SupplyHouse.com
20
$51.28
Airtec 81914 MV4 Ceiling Diffuser W/ 4-Way Grille (8" X 8") | Supplyhouse.Com
SupplyHouse.com
20
$110.00
1-1/3 ft. X 4 ft. Dropped White Acrylic Diffuser
Home Depot
431
Free shipping
$110.00
1-1/3 ft. X 4 ft. Dropped White Acrylic Diffuser
Home Depot
431