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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.

Clear Linear Air Diverter. 45 degree angle, Purchase item #4875 for a 90 degree deflection.

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  • Clear Linear Air Diverter. 45 degree angle, Purchase item #4875 for a 90 degree deflection.
  • Item # 4874 instruction sheet.
  • Clear Linear Diverters for 2' and 4' Long Linear Diffusers.
  • "U" channel included with every linear diverter.
  • "H" Channel for special hanging needs. Call 631-842-0099 to request.
  • Just under 5.5" wide

Clear Linear Air Diverter for a 45 Degree Deflection (4874-xx)

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Product Name Price Qty
Clear Linear Air Diverter, 24" (#4874-24) $26.99
Buy 10 for $25.99 each
Clear Linear Air Diverter, 48" (#4874-48) $33.99
Buy 10 for $32.49 each
Buy 20 for $30.99 each

Availability: In stock.


Quick Overview

This clear diverter works by pushing the air away in a 45 degree angle. If you are sitting right under the vent, this might not be the best choice. Use item # 4875 to divert air in a 90 degree direction, across the ceiling.

Item #4874 is best used to shield drafts from linear vents along the perimeter of the room or very close to the windows.

Item # 4874-48 actual size: 46.25" long x 5.50" in width. Item # 4874-24 actual size: 22.25" long x 5.50" in width.


The Clear Linear Air Diverter and linear air vent deflector will help deflect unwanted, constant blowing air from strip-line/long vents. Easy to install. No tools needed. All parts included. 100% Clear acrylic. Diverter is made for 2' & 4' sections of Linear Air Diffusers but can be shortened using a hack saw with a fine tip blade. This item will divert air at approximately a 45 degree angle. Item 4875 will divert air at a full 90 degrees. NOTE: Building Engineers, this item redirects airflow and does not inhibit or restrict the flow from HVAC diffusers.

Additional Information

Item # 4874-xx

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