Shop Diffuser Box HVAC

Sponsored
About our ads
$22.09
$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
52% off
$22.09
$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
$349.99
$850.00
Aromely Smart HVAC Scent Diffuser Up To 4,000 SQSF - UPGRADED
Advantage Mechanical Supply
58% off
$349.99
$850.00
Aromely Smart HVAC Scent Diffuser Up To 4,000 SQSF - UPGRADED
Advantage Mechanical Supply
$48.99
F&L R6 Insulated Galvanized Ceiling Register Box - Premium HVAC Duct Boot For Secure Vent And Diffuser Connections, Heavy-Duty Galvanized Steel,
Amazon.com
7
Free shipping
$48.99
F&L R6 Insulated Galvanized Ceiling Register Box - Premium HVAC Duct Boot For Secure Vent And Diffuser Connections, Heavy-Duty Galvanized Steel,
Amazon.com
7
$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
26
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
26
$1,695.80
$1,971.36
Four Way Angled Face Concentric Diffuser 16.5" / 3.5" / 14" / 30" X 13" / 18" X 18" / 18" X 5" / 1000 - 2500
Advantage Mechanical Supply
13% off
$1,695.80
$1,971.36
Four Way Angled Face Concentric Diffuser 16.5" / 3.5" / 14" / 30" X 13" / 18" X 18" / 18" X 5" / 1000 - 2500
Advantage Mechanical Supply
$35.78
Rectorseal Truaire Retrofit Grille/Damper MV3 81913 Plastic Ceiling Diffuser With Incorporated Ceiling Box, Easy Installation, HVAC, 8X8 3 Way
Amazon.com
122
Free shipping
$35.78
Rectorseal Truaire Retrofit Grille/Damper MV3 81913 Plastic Ceiling Diffuser With Incorporated Ceiling Box, Easy Installation, HVAC, 8X8 3 Way
Amazon.com
122
$44.99
Plastic Air Diffusers 1'X1' White 2-Way Grille/Damper/Box (MV2)-Airtec Airtec
1800ceiling.com
7
$44.99
Plastic Air Diffusers 1'X1' White 2-Way Grille/Damper/Box (MV2)-Airtec Airtec
1800ceiling.com
7
$47.16
HVAC Premium 18" X 8" 3-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 19.75"W X 9.75"H]
Amazon.com
6K+
Free shipping
$47.16
HVAC Premium 18" X 8" 3-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 19.75"W X 9.75"H]
Amazon.com
6K+
$22.99
Duct Outlet 6" X 6" Ceiling Box, W/ 6" Round Collar - Connects Register Vent And Diffuser HVAC
Amazon.com
40
Free shipping
$22.99
Duct Outlet 6" X 6" Ceiling Box, W/ 6" Round Collar - Connects Register Vent And Diffuser HVAC
Amazon.com
40
$58.00
Havaco 2'X2' Lay-In 3 Cone Supply With 12" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
Amazon.com
277
Free shipping
$58.00
Havaco 2'X2' Lay-In 3 Cone Supply With 12" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
Amazon.com
277
$179.99
BUILDMART - 36" Plenum Box For [36" Linear Slot Diffuser - (1 Slot) Single Slot] Premium Insulated Galvanized Sheet Metal Plenum Box For Heating And
Amazon.com
1
Free shipping
$179.99
BUILDMART - 36" Plenum Box For [36" Linear Slot Diffuser - (1 Slot) Single Slot] Premium Insulated Galvanized Sheet Metal Plenum Box For Heating And
Amazon.com
1
$24.82
$26.92
HVAC Premium 8"W X 8"H 4-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 9.75"W X 9.75"H]
Amazon.com
6K+
$24.82
$26.92
HVAC Premium 8"W X 8"H 4-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 9.75"W X 9.75"H]
Amazon.com
6K+
$179.98
2025 Upgraded 3500 Sq.Ft Smart Scent Machine - HVAC System, Whole House Aroma & Hotel Collection Diffuser, Waterless Essential Oil Diffuser For Home,
Amazon.com
21
Free shipping
$179.98
2025 Upgraded 3500 Sq.Ft Smart Scent Machine - HVAC System, Whole House Aroma & Hotel Collection Diffuser, Waterless Essential Oil Diffuser For Home,
Amazon.com
21
$50.45
10"W X 10"H Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall Or Ceiling - Grille Register - High Airflow - White [Outer Dimensions: 11.75"W X
Amazon.com
2K+
Free shipping
$50.45
10"W X 10"H Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall Or Ceiling - Grille Register - High Airflow - White [Outer Dimensions: 11.75"W X
Amazon.com
2K+
$48.96
HVAC Premium 10''W X 10''H Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser - Full Control Vertical/Horizontal Airflow Direction - Vent
Amazon.com
125
Free shipping
$48.96
HVAC Premium 10''W X 10''H Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser - Full Control Vertical/Horizontal Airflow Direction - Vent
Amazon.com
125
$65.95
Repa Market 9" X 9" (Neck) Square Aluminum Ceiling Diffuser - Industrial 4 Way Supply Exhaust Ventilation, Air Conditioning - HVAC Horizontal Flow
Amazon.com
Free shipping
$65.95
Repa Market 9" X 9" (Neck) Square Aluminum Ceiling Diffuser - Industrial 4 Way Supply Exhaust Ventilation, Air Conditioning - HVAC Horizontal Flow
Amazon.com
Free shipping
$52.25
HVAC Premium 14''W X 4''H Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall Or Ceiling - Grille Register - High Airflow - White [Outer
Amazon.com
1
Free shipping
$52.25
HVAC Premium 14''W X 4''H Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall Or Ceiling - Grille Register - High Airflow - White [Outer
Amazon.com
1
$32.70
HVAC Premium 14" X 8" 1-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 15.75"W X 9.75"H]
Amazon.com
68
$32.70
HVAC Premium 14" X 8" 1-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 15.75"W X 9.75"H]
Amazon.com
68
$39.66
HVAC Premium 8''W X 8''H 4-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser - Full Control Vertical/Horizontal Airflow Direction - Vent
Amazon.com
207
Free shipping
$39.66
HVAC Premium 8''W X 8''H 4-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser - Full Control Vertical/Horizontal Airflow Direction - Vent
Amazon.com
207
$41.99
Fits 16X8 Duct Opening 2 Way Steel Air Supply Diffuser By Handua | Register Vent Cover Grille For Sidewall And Ceiling | White | Outer Dimensions:
Amazon.com
458
Free shipping
$41.99
Fits 16X8 Duct Opening 2 Way Steel Air Supply Diffuser By Handua | Register Vent Cover Grille For Sidewall And Ceiling | White | Outer Dimensions:
Amazon.com
458
$169.99
BUILDMART - 24" Plenum Box For [24" Linear Slot Diffuser - (3 Slot) Triple Slot] Premium Insulated Galvanized Sheet Metal Plenum Box For Heating And
Amazon.com
Free shipping
$169.99
BUILDMART - 24" Plenum Box For [24" Linear Slot Diffuser - (3 Slot) Triple Slot] Premium Insulated Galvanized Sheet Metal Plenum Box For Heating And
Amazon.com
Free shipping
$35.95
HVAC Premium 12''W X 6''H Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser - Full Control Vertical/Horizontal Airflow Direction - Vent
Amazon.com
360
Free shipping
$35.95
HVAC Premium 12''W X 6''H Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser - Full Control Vertical/Horizontal Airflow Direction - Vent
Amazon.com
360
$22.24
HVAC Premium 10'' X 6'' 1-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 11.75''W X 7.75''H]
Amazon.com
6K+
$22.24
HVAC Premium 10'' X 6'' 1-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 11.75''W X 7.75''H]
Amazon.com
6K+
$51.56
HVAC Premium 12''W X 12''H 3-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 13.75''W X 13.75''H]
Amazon.com
154
Free shipping
$51.56
HVAC Premium 12''W X 12''H 3-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 13.75''W X 13.75''H]
Amazon.com
154
$175.00
Ultimate HVAC Diffuser - Home Fragrance System - Scent Machine For Whole House - Commercial Diffuser Machine Coverage Up To 3300Sq Ft - No Water
Amazon.com
1
Free shipping
$175.00
Ultimate HVAC Diffuser - Home Fragrance System - Scent Machine For Whole House - Commercial Diffuser Machine Coverage Up To 3300Sq Ft - No Water
Amazon.com
1
$39.95
HVAC Premium 16" X 8" 1-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 17.75"W X 9.75"H]
Amazon.com
5K+
Free shipping
$39.95
HVAC Premium 16" X 8" 1-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 17.75"W X 9.75"H]
Amazon.com
5K+
$32.02
HVAC Premium 14''W X 8''H 3-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 15.75''W X 9.75''H]
Amazon.com
6K+
$32.02
HVAC Premium 14''W X 8''H 3-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 15.75''W X 9.75''H]
Amazon.com
6K+
$1,228.95
F-Matic Versa Aluminum Diffuser HVAC System Silver 110V W/HVAC
Worldwide Janitor
$1,228.95
F-Matic Versa Aluminum Diffuser HVAC System Silver 110V W/HVAC
Worldwide Janitor
$38.07
Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall Or Ceiling Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall Or Ceiling - Grille
Amazon.com
235
Free shipping
$38.07
Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall Or Ceiling Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall Or Ceiling - Grille
Amazon.com
235
$165.71
20" X 12" Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall Or Ceiling - Grille Register - High Airflow - White [Outer Dimensions: 21.75"W X
Amazon.com
4
Free shipping
$165.71
20" X 12" Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall Or Ceiling - Grille Register - High Airflow - White [Outer Dimensions: 21.75"W X
Amazon.com
4
$299.99
2025 Upgraded HVAC Scent Diffuser Machine Cover 6000 Sq.Ft With Wi-Fi Control For Large Room, 1000Ml Scent Air Machine For Home, Waterless Cold Air
Amazon.com
10
Free shipping
$299.99
2025 Upgraded HVAC Scent Diffuser Machine Cover 6000 Sq.Ft With Wi-Fi Control For Large Room, 1000Ml Scent Air Machine For Home, Waterless Cold Air
Amazon.com
10
$82.16
$97.00
Filter Box 4 Inches With Efficient Box Fan Filter, Duct Filters Box For Fresh Air Intake And Improved Airflow, HVAC Filter Box For Family, Factory,
Amazon.com
19
Free shipping
15% off
$82.16
$97.00
Filter Box 4 Inches With Efficient Box Fan Filter, Duct Filters Box For Fresh Air Intake And Improved Airflow, HVAC Filter Box For Family, Factory,
Amazon.com
19
$31.25
HVAC Premium Side Ceiling Box | Side Out Ceiling Register Box | 6" X 6" X 6" HVAC Ductwork Sheet Metal | Galvanized Steel Metal Box Is Compatible With
Amazon.com
11
Free shipping
$31.25
HVAC Premium Side Ceiling Box | Side Out Ceiling Register Box | 6" X 6" X 6" HVAC Ductwork Sheet Metal | Galvanized Steel Metal Box Is Compatible With
Amazon.com
11
$72.77
18" X 28" Return Air Grille - Sidewall And Ceiling - HVAC Vent Duct Cover Diffuser - [White] [Outer Dimensions: 19.75W X 29.75"H]
Amazon.com
7
Free shipping
$72.77
18" X 28" Return Air Grille - Sidewall And Ceiling - HVAC Vent Duct Cover Diffuser - [White] [Outer Dimensions: 19.75W X 29.75"H]
Amazon.com
7
$129.99
BUILDMART - 12" Plenum Box For [12" Linear Slot Diffuser - (3 Slot) Triple Slot] Premium Insulated Galvanized Sheet Metal Plenum Box For Heating And
Amazon.com
Free shipping
$129.99
BUILDMART - 12" Plenum Box For [12" Linear Slot Diffuser - (3 Slot) Triple Slot] Premium Insulated Galvanized Sheet Metal Plenum Box For Heating And
Amazon.com
Free shipping
$395.36
Io HVAC Controls VD-10 Vd-10 24" X 24", 10" Neck Diffuser W/ Thermostat, 118" To 710 Cfm Range Vav Diffuser, VD-10 | Supplyhouse.Com
SupplyHouse.com
$395.36
Io HVAC Controls VD-10 Vd-10 24" X 24", 10" Neck Diffuser W/ Thermostat, 118" To 710 Cfm Range Vav Diffuser, VD-10 | Supplyhouse.Com
SupplyHouse.com
See more
See less
    Some results have been hidden because they may be inaccessible to you.Show inaccessible results
    See more images

    Shop Diffuser Box HVAC

    Sponsored
    About our ads
    $22.09
    $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
    52% off
    $22.09
    $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
    $349.99
    $850.00
    Aromely Smart HVAC Scent Diffuser Up To 4,000 SQSF - UPGRADED
    Advantage Mechanical Supply
    58% off
    $349.99
    $850.00
    Aromely Smart HVAC Scent Diffuser Up To 4,000 SQSF - UPGRADED
    Advantage Mechanical Supply
    $48.99
    F&L R6 Insulated Galvanized Ceiling Register Box - Premium HVAC Duct Boot For Secure Vent And Diffuser Connections, Heavy-Duty Galvanized Steel,
    Amazon.com
    7
    Free shipping
    $48.99
    F&L R6 Insulated Galvanized Ceiling Register Box - Premium HVAC Duct Boot For Secure Vent And Diffuser Connections, Heavy-Duty Galvanized Steel,
    Amazon.com
    7
    $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
    26
    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
    26
    $1,695.80
    $1,971.36
    Four Way Angled Face Concentric Diffuser 16.5" / 3.5" / 14" / 30" X 13" / 18" X 18" / 18" X 5" / 1000 - 2500
    Advantage Mechanical Supply
    13% off
    $1,695.80
    $1,971.36
    Four Way Angled Face Concentric Diffuser 16.5" / 3.5" / 14" / 30" X 13" / 18" X 18" / 18" X 5" / 1000 - 2500
    Advantage Mechanical Supply
    $35.78
    Rectorseal Truaire Retrofit Grille/Damper MV3 81913 Plastic Ceiling Diffuser With Incorporated Ceiling Box, Easy Installation, HVAC, 8X8 3 Way
    Amazon.com
    122
    Free shipping
    $35.78
    Rectorseal Truaire Retrofit Grille/Damper MV3 81913 Plastic Ceiling Diffuser With Incorporated Ceiling Box, Easy Installation, HVAC, 8X8 3 Way
    Amazon.com
    122
    $44.99
    Plastic Air Diffusers 1'X1' White 2-Way Grille/Damper/Box (MV2)-Airtec Airtec
    1800ceiling.com
    7
    $44.99
    Plastic Air Diffusers 1'X1' White 2-Way Grille/Damper/Box (MV2)-Airtec Airtec
    1800ceiling.com
    7
    $47.16
    HVAC Premium 18" X 8" 3-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 19.75"W X 9.75"H]
    Amazon.com
    6K+
    Free shipping
    $47.16
    HVAC Premium 18" X 8" 3-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 19.75"W X 9.75"H]
    Amazon.com
    6K+
    $22.99
    Duct Outlet 6" X 6" Ceiling Box, W/ 6" Round Collar - Connects Register Vent And Diffuser HVAC
    Amazon.com
    40
    Free shipping
    $22.99
    Duct Outlet 6" X 6" Ceiling Box, W/ 6" Round Collar - Connects Register Vent And Diffuser HVAC
    Amazon.com
    40
    $58.00
    Havaco 2'X2' Lay-In 3 Cone Supply With 12" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
    Amazon.com
    277
    Free shipping
    $58.00
    Havaco 2'X2' Lay-In 3 Cone Supply With 12" Pre-Molded Boot, ABS Plastic Supply Grille, Ceiling Diffuser For Air Vent, Ideal For Heating, Cooling, And
    Amazon.com
    277
    $179.99
    BUILDMART - 36" Plenum Box For [36" Linear Slot Diffuser - (1 Slot) Single Slot] Premium Insulated Galvanized Sheet Metal Plenum Box For Heating And
    Amazon.com
    1
    Free shipping
    $179.99
    BUILDMART - 36" Plenum Box For [36" Linear Slot Diffuser - (1 Slot) Single Slot] Premium Insulated Galvanized Sheet Metal Plenum Box For Heating And
    Amazon.com
    1
    $24.82
    $26.92
    HVAC Premium 8"W X 8"H 4-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 9.75"W X 9.75"H]
    Amazon.com
    6K+
    $24.82
    $26.92
    HVAC Premium 8"W X 8"H 4-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 9.75"W X 9.75"H]
    Amazon.com
    6K+
    $179.98
    2025 Upgraded 3500 Sq.Ft Smart Scent Machine - HVAC System, Whole House Aroma & Hotel Collection Diffuser, Waterless Essential Oil Diffuser For Home,
    Amazon.com
    21
    Free shipping
    $179.98
    2025 Upgraded 3500 Sq.Ft Smart Scent Machine - HVAC System, Whole House Aroma & Hotel Collection Diffuser, Waterless Essential Oil Diffuser For Home,
    Amazon.com
    21
    $50.45
    10"W X 10"H Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall Or Ceiling - Grille Register - High Airflow - White [Outer Dimensions: 11.75"W X
    Amazon.com
    2K+
    Free shipping
    $50.45
    10"W X 10"H Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall Or Ceiling - Grille Register - High Airflow - White [Outer Dimensions: 11.75"W X
    Amazon.com
    2K+
    $48.96
    HVAC Premium 10''W X 10''H Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser - Full Control Vertical/Horizontal Airflow Direction - Vent
    Amazon.com
    125
    Free shipping
    $48.96
    HVAC Premium 10''W X 10''H Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser - Full Control Vertical/Horizontal Airflow Direction - Vent
    Amazon.com
    125
    $65.95
    Repa Market 9" X 9" (Neck) Square Aluminum Ceiling Diffuser - Industrial 4 Way Supply Exhaust Ventilation, Air Conditioning - HVAC Horizontal Flow
    Amazon.com
    Free shipping
    $65.95
    Repa Market 9" X 9" (Neck) Square Aluminum Ceiling Diffuser - Industrial 4 Way Supply Exhaust Ventilation, Air Conditioning - HVAC Horizontal Flow
    Amazon.com
    Free shipping
    $52.25
    HVAC Premium 14''W X 4''H Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall Or Ceiling - Grille Register - High Airflow - White [Outer
    Amazon.com
    1
    Free shipping
    $52.25
    HVAC Premium 14''W X 4''H Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall Or Ceiling - Grille Register - High Airflow - White [Outer
    Amazon.com
    1
    $32.70
    HVAC Premium 14" X 8" 1-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 15.75"W X 9.75"H]
    Amazon.com
    68
    $32.70
    HVAC Premium 14" X 8" 1-Way AIR Supply Grille - Vent Cover & Diffuser - Flat Stamped Face - White [Outer Dimensions: 15.75"W X 9.75"H]
    Amazon.com
    68