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Plastic Diffusers

Non-corrosive plastic ceiling registers, vents and air returns are ideal for wet and humid areas such as kitchens, locker rooms, showers, indoor pools, dishwashing areas and medical MRI rooms. Larger 2'x2' are made to be installed into a ceiling grid system while our smaller 12" x 12" plastic vents are ideal for rest rooms and showers.

Ceiling Repairs

Black soot and dust on your ceiling tiles can be expensive and difficult to clean or replace. Avoid damage to the ceiling tiles surrounding your ceiling diffusers by installing our unique ceiling dust deflectors. carries many innovative repair products and even offers How-To videos for the do-it-yourselfers.

Air Diverters

Block and redirect annoying drafts from square 2'x2' ceiling diffusers and linear ceiling vents. Our diverters install quickly without the need for tools. Stay comfortable while sitting at your work station. Ideal for offices, restaurants, commercial kitchens and medical facilities.

Installs in 10 seconds

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  • Installs in 10 seconds
  • Air Diverter Flyer
  • 12" long, rear of diverter installs between diffuser and ceiling grid system.
  • Installs over ceiling grid system and under the diffuser
  • 24" wide, installs between diffuser and ceiling grid system
  • Air Diverter Postcard
  • 2.75" high
  • Don't use cardboard to cover your diffuser
  • Custom made diverters. Send us an email with pictures and dimensions.
  • Item 4873-ext  Side flange extension strips for 9/16" grid systems. 2 per pack.
  • The 4873 & 4873-Tri will work nicely with a flat style perforated air diffuser.


White Air Vent Deflector 24"x12"

This 24"x12" air vent deflector is specially-designed to divert hot or cold blowing air from ceiling HVAC air conditioning registers away from the areas you want to protect. It is easy to install and fits standard-sized 2'x2' HVAC diffusers, vents, and registers. This air vent diverter redirects airflow without inhibiting or restricting the flow of air from your ceiling HVAC diffusers. As such, they should never be used in pairs to block an entire diffuser.

This air vent deflector is made of durable 0.080 gauge polystyrene so it is built to last. It is white in color so it will blend seamlessly with most ceilings and HVAC air diffusers. Its dimensions measure 24" wide x 12" long x 2.75" high. At, we offer a full array of air vent deflectors suitable for a wide array of installations and applications. Shop our expansive inventory of air vent deflectors and air vent diverters below and save on all of your ceiling repair needs.

NOTE: Air Diverters are intended to be used one at a time. Do not block the entire diffuser by using two side by side.

NOTE: Building Engineers, this item redirects airflow and does not inhibit or restrict the flow from HVAC diffusers.

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Additional Information

Item # 4873

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