Made of high performance thermoformed polycarbonate for long life and ease in cleaning. All exterior skylights include a 10 oz. tube of approved urethane sealant that must be used for installation. Please measure both the rough hole opening as well as the overall exterior size (flange-flange). Sizes available to replace most original equipment. Inners white obscure (no window) or a clear window dome. Purchase exterior skylight and inner separately. Skylights include care and installation instructions. 18" x 30" rough hole. 20" x 32" flange-to-flange.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov