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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.

Use cord lock to snug Draft Shield to ceiling.

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  • Use cord lock to snug Draft Shield to ceiling.
  • You may also use our square Draft Shields for round vents.
  • Square Shield, Lanyards and instructions included with each unit. Item #'s 4740-CA1212 & 4740-CA1414
  • Rectangular Draft Shield installed. 4740-CA1508 & 4740-CA1608
  • Cut away view. Draft Shields are 2" deep.
  • Both style lanyards included
  • Double hook lanyard used.
  • Item # 4740-CA2424 will cover a return air grill up to 25" x 25"
  • Square Draft Shield covering a round vent

Draft Shield

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Product Name Price Qty
12" x 12" Draft Shield (#4740-CA1212) $23.99
14" x 14" Draft Shield (#4740-CA1414) $23.99
15" x 08" Draft Shield (#4740-CA1508) $23.99
16" x 08" Draft Shield (#4740-CA1608) $23.99
24" x 24" Draft Shield for Return Grill (#4740-CA2424) $37.99

Availability: In stock.


Quick Overview

Winterize your home.

The Draft Shield helps winterize your home by blocking drafts from your open central air conditioner vents. Draft Shield works on square, rectangle and round vents , and even on through structure wall air conditioner units. Draft Shields are 2" deep to accommodate a variety of vents sizes and depths.


Home Winterization. During the winter heating season, homeowners with uncovered central air conditioning vents and ceiling vent drafts spend more than $200 in unnecessary heating costs that could be saved with Draft Shields central AC vent covers. Our product is designed to prevent heat loss, conserve energy, and save money by covering central air-conditioning vents, and preventing icy drafts from entering your room through open vents. Closing the louvers in your grilles will not stop airflow and associated heat loss because it is not a total seal. Draft Shields central air vent covers are available for all standard-sized central air conditioning vents, and can be mounted on walls or ceilings in seconds without any tools. They can also be used to cover the return air grill (item # 4740-CA2424). Home Winterization Saves Money Hot air produced by heating systems in fall/winter lose thermal values of 30% or more through the central air duct system. Heated air rises, and is drawn through unsealed central air conditioning vents into ductwork in the cold attic. The air is re-introduced as icy drafts through lower vents. A 15 to 20 degree difference often exists between upper heated room air and lower register re-cycled cold air, emitted from lower air ducts. Draft Shields central air vent covers will block cold drafts; prevent moisture from entering your AC system; inhibit the growth of mold and mildew; and keep your home comfortably warm. Using Draft Shields central air vent covers to insulate against heat loss will result in hundreds of $$$ in energy savings each year.

Additional Information

Item # 4740-xx

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