Specifications 

13" x 23" Cutout = 10 3/4" x 20 13/16"

13" x 23" Inside = 9 3/8" x 19 1/2"

13" x 23" Outside = 13" x 23 1/4"

Tough water resistant design for marine environments

Designed for heavy traffic areas

Positive locking system won't pop open

Lid gasket for weather tight seal

Detailed installation instructions along with actual size dimension template included

Multiple sizes and colors