Designed to fit a standard 8″ x 16″ outside crawl space vent opening. This cover will improve the appearance of your home and encapsulate your crawl space from pests and the elements. SIZE: Fits a standard 8″ x 16″ outside crawl space vent opening Outer Diameter: 18-3/4″ L x 11-1/4″ H Recessed Diameter: 14-1/4″ L x 7-1/4″ H x 1/4″ D EASY INSTALL: Includes mounting screws, caulk is recommend for an air tight seal PAINTABLE: If desired, the plastic material can be painted