Dayton Louver Intake 36-48 In Aluminum 4f956

40 In.H 40 in.W non-drnbl alu intake louver louver type stationary blade frame type flanged frame depth 4 in mounting style surface mount outside height 40 in outside width 40 in rough opening height 36 in rough opening width 36 in louver maximum intake 4 200 cfm maximum exhaust 6 000 cfm maximum outside width 52 in minimum outside width 40 in flange width 2 in free area 4.8 Sq ft beginning point of water penetration 766 fpm maximum air velocity 3000 fpm blade angle 45 degrees

40 In.H 40 in.W non-drnbl alu intake louver louver type stationary blade frame type flanged frame depth 4 in mounting style surface mount outside height...show more