Boat Marine Blower Vent Attwood 1494 Straight Slat Vent Exhaust Louver Chrome

These are Plastic made to look like chrome. (NOT METAL) Good condition Attwood 1492 (stamped) There is some chipping and pealing of chrome finish. Dimensions: (Please look at pictures) OD: 17-1/2" x 2-3/4" Rough Opening: 15-1/2" x 1-1/2" Hole Spacing: 16-5/8" x 1-1/2" Please inspect pictures for condition Yours should look like these or have same opening. May have been used on these other brand boats: Sylvan, Rinker, Sea Ray, Sea Raider, Renken, Sea Sprite, Galaxie, Glasstron, Ebbtide, Sport Craft, Four Winns