505B Double Frame Port fully cast Port Extremely rigid construction actually strengthens the deck
Alloy is stronger than Stainless Steel , Lighter than Aluminum and will NEVER Corrode
Screen and Outer Trim Ring Included
Opening dimension 4" x 14" (10.2 x 35.6 cm)
Interior Flange dimension OD 7"x 16 5/8" (17.8 x 42.2 cm)
Cutout dimension 4 3/8"x 14 5/8" (11.1 x 37.1 cm)
Spigot length dimension 1-½" (3.8 cm) Fits hull thickness from 1/4" to 1 ½".