UV Stable Plastic Resin and Chemical Resistant.
Custom Seal for Water Resistant Product.
1/4″ Temper Glass for Strength, Clarity, and Chemical Resistance.
Stainless Trim Ring and bug Screen Included.
Cutout Dimensions :  per template.
Inside Dimensions :  5.375″ x 18″.
Outside Dimensions :  8.625″ x 21.75″.

Jim Black Elliptical Port Light 5” x 18”