All-welded 304 stainless steel construction with polished finish. Install with #8 screws. Requires collector box 1487A for 3″ system, or 1487B for 4″ system. Attwood hull-mounted vents are designed to install by fastening as a complete unit from either inside or outside the hull. 4-3/8 wide, 11-3/8 long, 3/4 high w/ a 7/8′ neck. Installation hole is 3-1/4 x 10-1/4
Size 4-3/8″W x 11-5/16″L x 3/4″H
For 3″ or 4″ ID ventilation systems
Pre-drilled with six holes for #8 screws
All-welded 304 stainless steel construction
Boat Cabin Products, Boats & Equipment, Fishing, Fishing Watercraft & Trolling Motors, Vents & Deck Plates
Attwood Stainless Steel Louvered Vent (4-3/8 x 11-5/16-Inch)
Size 4-3/8″W x 11-5/16″L x 3/4″H
For 3″ or 4″ ID ventilation systems
Pre-drilled with six holes for #8 screws
Amazon.com Price: $41.93 $39.05 (as of 19/04/2017 02:29 PST- Details)









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