T-H Marine Supplies, LLC is one of the most respected names in the marine industry, manufacturing a wide range of performance-enhancing boating accessories that are proudly made in the United States. Established in 1975 in Huntsville, Alabama, the company has grown into a trusted Tier 1 supplier for virtually every major boat manufacturer in the country while also serving aftermarket distributors, marine retailers, and direct-to-consumer customers nationwide.

With an expansive catalog of thousands of products, T-H Marine’s offerings include livewell systems, outboard motor mounts, jack plates, boat rigging components, LED lighting, trolling motor accessories, deck hardware, hatches, and their signature HOT FOOT throttle system. These components are used by professional anglers, tournament fishing teams, and recreational boaters alike — all relying on the brand’s reputation for durability, precision engineering, and on-the-water performance.

T-H Marine is more than a parts supplier — it is a company built by boaters, for boaters. With a culture rooted in American values, the company is driven by real-world feedback from fishing professionals, engineers, and end-users to continuously develop products that improve the marine experience. They maintain strong internal R&D, quick-turn innovation cycles, and a hands-on approach to quality control that reflects the pride of American craftsmanship.

Over the decades, the company has expanded its operations through strategic acquisitions and product line growth, while never straying from its core mission: delivering superior marine solutions that are built to perform and built to last — right here in the USA. As of 2025, T-H Marine is celebrating 50 years of innovation, job creation, and industry leadership, reinforcing its legacy as an iconic American marine brand committed to excellence on and off the water.



Designed for quick access and reliable protection, this 8-inch screw-out deck plate keeps gear, wiring, and valves within reach while sealing out spray and rain. The center panel threads in smoothly and removes by hand—no tools required—so you can service systems fast on the water or at the dock.

A positive O-ring and fully overlapping lid create a watertight seal that helps keep compartments dry, even in rough chop or when washing down the deck. Hidden mounting hardware preserves a clean, factory look, and the Polar White finish blends with most gelcoats for a seamless install.

Built from marine-grade, UV- and chemical-resistant plastic, it’s made to withstand long days in the sun and harsh marine environments without chalking or becoming brittle. The textured surface offers extra grip for wet hands and gloved operation.

Ideal for boats, kayaks, and RVs, this deck plate provides an 8-inch opening with approximately 10 inches overall diameter for generous access to tanks, seacocks, pumps, and storage. Whether you’re cruising coastal waters or spending weekends on inland lakes, it delivers the durability and peace of mind you want on every trip.

8-Inch Screw-Out Deck Plate Polar White

Keep compartments dry and easy to access with this 8-inch screw-out deck plate in Polar White. A positive O-ring seal and overlapping lid deliver a watertight, clean finish with no visible fasteners. Durable, UV-stable marine plastic stands up to sun, salt, and chemicals.

8-Inch Screw-Out Deck Plate Polar White

$21.37

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