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Plastic Diffusers, Plastic Vents

Browse through our online catalog for a large selection of plastic HVAC diffusers, ceiling air diffusers for diffusing the air from ceiling air vents, and drop ceiling products. Plastic air diffusers never rust, and are ideal for solving the problem of rusty ceiling air vents in kitchens, dish washing rooms, indoor pools and other high moisture areas.

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Plastic Air Diffuser with metal nuts (#4945-*)

Plastic Air Diffuser with metal nuts (#4945-*)
As low as $ 52.92

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Plastic Air Diffuser MRI Non Metal (#4986MRI-xx)

Plastic Air Diffuser MRI Non Metal (#4986MRI-xx)
As low as $ 54.95

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Plastic Return Air with Back Plate (#4988-xx)

Plastic Return Air with Back Plate (#4988-xx)
As low as $ 59.95

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Return Air Filter Housing-No Back Plate (#4995)

Return Air Filter Housing-No Back Plate (#4995)
$ 69.00
As low as: $ 61.20

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Plastic Air Diffuser & Return Combo (#4990-xx)

Plastic Air Diffuser & Return Combo (#4990-xx)
As low as $ 70.00

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Plastic Egg Crate Filtered Return (#4989-xx)

Plastic Egg Crate Filtered Return (#4989-xx)
As low as $ 85.99

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Plastic Perforated Return (#4994)

Plastic Perforated Return (#4994)
$ 32.95
As low as: $ 30.95

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Plastic Single Tier Return (#4991w)

Plastic Single Tier Return (#4991w)
$ 79.99

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Plastic Double Tier Return (#4992w)

Plastic Double Tier Return (#4992w)
$ 79.99

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Air Diverter-White 24"x12" (#4873)

Air Diverter-White 24"x12" (#4873)
Regular Price: $ 29.99
Special Price: $ 26.99
As low as: $ 24.99

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Ceiling Dust Deflector-White 24"x24"x3"  (#4872)

Ceiling Dust Deflector-White 24"x24"x3" (#4872)
$ 20.99
As low as: $ 19.99

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Universal Collar (#4987-U-Collar)

Universal Collar (#4987-U-Collar)
$ 28.00

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Butterfly Air Dampers (#4944-xx)

Butterfly Air Dampers (#4944-xx)
As low as $ 26.95

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Residential & Light Commercial Plastic Air Diffusers (#4946-xx)

Residential & Light Commercial Plastic Air Diffusers (#4946-xx)
As low as $ 34.99

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12" x 12" Plastic Slotted Diffusers (#4947-xx)

12" x 12" Plastic Slotted Diffusers (#4947-xx)
As low as $ 49.99

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Clear Linear Air Diverter, 48" (#4874)

Clear Linear Air Diverter, 48" (#4874)
$ 31.99
As low as: $ 29.99

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16 Item(s) Show per page
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