Round Aluminum Air Louver 4902-IS-12 Step Down Ceiling Diffuser Designed for protection of ceiling

Designed for protection of ceiling openings in fire rated floor/ceiling assemblies with fire resistance ratings of 3 hours or less

Standard Features * For large volume air delivery * For evaporative coolers or central blower systems * Adjustable directional dampers with shut-off * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White

Attractive concentric ring deflects air stream 360°

Delivers supply air in a 360°air pattern

inner dimension and outside dimension available * Available in continuous lengths with butt joints * Tamper proof screws * Standard Color

Round Aluminum Air Louver 4902-IS-12 Step Down Ceiling Diffuser Designed for protection of ceilingStandard Features * Lightweight Aluminum vent louver * This is a larger version of the 4901 series * Flush face * Spring clip mounting * Able to withstand wet and corrosive environments * Easily installed using only a high grade silicon caulk * Satin Anodized finish Options * IS Insect screen * Standard Color or Designer Color Finish available on this product