attwoodmarine.com WATER SYSTEMS & VENTILATION 37 Vents & Collector Boxes Attwood hull-mounted vents are designed to install by fastening as a complete unit from either inside or outside the hull. Ventilation hose (not included) twists into the bottom of the box to form a raised water barrier. Plastic vents are corrosion-resistant and will not discolor. All collector boxes and vents are designed for intake or exhaust and meet ABYC H-2 cross sectional area requirements. Collector Box • For use with narrow stainless steel vents (1493 or 1499), with two 3" I.D. wire-supported ventilation hoses. • Corrosion-resistant plastic. For Use with Vent(s) Depth Installation Hole Size OEM Part # Part # 1493, 1499 4-1/16" 2-7/16" x 16-3/16" 1343-1 — A 3" 16-7/8" 1499 1493 Narrow Stainless Steel Louvered Vents • Suitable for installation on any flat or most contoured hulls. • Constructed of all-welded #304 Stainless Steel with a polished finish. • Vents for use with 3" I.D. ventilation systems, and require a 1343 collector box. • Install with #6 fasteners. For use with Collector Box Installation Hole Size A Depth OEM Part # Part # 1343 2-1/16" x 15-15/16" 9/16" 1493-1 1493-5 1/16" 1499-1 1499-5 Collector Boxes • Collector boxes for use with 1488 stainless steel vent. • Available with cut-out for two 3" I.D. wire-supported hoses or one 4" I.D. wire-supported hose. • Corrosion-resistant plastic. For Use with Vent(s) Depth Installation Hole Size OEM Part # Part # 1488 5-9/16" 3-5/8" x 10-3/4" 1487A1 — 4-3/8" 11-5/16" 3/4" Stainless Steel Louvered Vent • All-welded #304 Stainless Steel construction with polished finish. • Install with #8 fasteners. • Requires collector box 1487A for 3" system. For use with Collector Box(es) Installation Hole Size OEM Part # Part # 1487A1 3-1/4" x 10-3/8" 1488-1 1488-5 Use With Use With
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