Round Aluminum Air Louver 4901-IS-6 Residential Registers & Grilles 055 T6 extruded aluminum frame

055 T6 extruded aluminum frame * 90% free area * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * 600 O - opposed blade damper * No Labor Collar - Square to round (square sizes only) * 600 T - T-Bar mount * 1/2" x 1/2" x 1" Lattice or 1" x 1" x 1" Lattice * Fractional sizes

to 23 29/32"

Rust-resistant pre-coat with durable powder finish

Back blades are parallel to the longest dimension

Round Aluminum Air Louver 4901-IS-6 Residential Registers & Grilles 055 T6 extruded aluminum frameStandard Features * Lightweight Aluminum vent louver * Able to withstand wet and corrosive environments * Spring clip mounting * 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