Whitecap Teak Trim Ring - 4" Inner Diameter Opening

The Whitecap Teak Trim Ring with 4" Inner Diameter Opening is a marine-grade trim component designed to frame and finish porthole installations on vessels, waterfront structures, and maritime equipment. This specialized ring serves both aesthetic and functional purposes, providing a finished appearance while protecting the edge of the opening from corrosion and environmental degradation. Whether you're outfitting a tactical watercraft, securing a coastal facility, or maintaining marine infrastructure, this teak trim ring delivers the durability and professional finish required in demanding saltwater environments.

Constructed from premium teak—a naturally rot-resistant hardwood prized in maritime applications—the Whitecap Teak Trim Ring features a 6-3/8" outer diameter with a recessed back design and 1/8" flange that seats flush against mounting surfaces. The 4" inner diameter opening accommodates standard porthole configurations, while the 3/8" thickness ensures structural integrity and resistance to warping in high-moisture conditions. Pre-drilled mounting holes eliminate guesswork during installation and minimize fastener penetration errors that could compromise watertight integrity. The 6" inner diameter flange provides a stable seating surface for even load distribution and reliable long-term performance.

Tactical teams, maritime security personnel, and vessel operators rely on this trim ring to maintain professional standards on deck equipment and compartment access points. Installation is straightforward: position the ring around the porthole opening and secure through the pre-drilled holes using corrosion-resistant fasteners appropriate for your mounting substrate. The lightweight design (0.2 lbs) makes handling practical for field teams, while teak's natural antimicrobial properties reduce maintenance requirements in challenging saltwater or humid environments. Compatible with standard 4" porthole dimensions, this ring integrates seamlessly into both retrofit and new-build maritime applications.