Newmar DX-3 Feed-Thru Waterproof Fitting [DX-3]DX 3 Feed Thru Waterproof Fitting Provided with a solid neoprene cable gland, the installer drills holes and slits as required to accommodate cable with or without a factory installed connector. Multiple cables may be passed through this single fitting. Features: Similar to CCX Series except the installer drills holes in the seal to accommodate cable(s) Multiple cables may be routed through a single fitting Specifications: Drill Thru Aperture: 1. 65