Air-Only Dorado Deck cowl ventilator with build-in Air-Only ventilator Complete set with cabin ring and all fitting screws. The cowl and dorade box made of extremely UV-stabilized plastics Models - DSDR (red cowl) or DSDB (blue cowl): Height x Width = 8.66" x 6.3" (220mm x 160mm) Cut-out = 3.74" (95mm) Free flow area = 3.72in2 (24cm2) Packed in box: 7.09" x 9.06" x 6.69" (18cm x 23cm x 17cm) Gross weight ~ 2.2lb (1kg)