The Thetford 94302 Storage/Sewer Hose Hatch with Thumb Latch features a back plate that accepts a 4" rigid PVC or flexible hose to create a storage area. The polar white finish is non-yellowing, UV stable/colorfast, and paintable. Impact and road salt resistant. Includes installation kit. NSF, CSA and TEI Certified. Collar depth of PVC attachment: 7/16". Cutout Dimension: 4-3/4" H x 5-7/8" W. Outside Dimension: 6-1/2" H x 7-5/8" W.