Model EXD-437 extruded aluminum louver 4" deep • 37½° combination blade


The EXD-437 combination louver features stationary drainable louver blades to protect against water penetration and an integral airfoil blade control damper to allow positive shutoff protection of air intake and exhaust openings. The EXD-437 is available in a wide array of anodized and painted finishes including custom color matching.