Got a boat, RV, or yacht hatch lid that needs to stay propped open? This stainless steel hatch support is your solution. It's made from marine-grade 304 stainless steel with a mirror-polished finish, so it's super tough and resistant to rust and corrosion from saltwater and weather. The length is fully adjustable – you can slide it to any position between 13.5 inches (342mm) and 22.9 inches (582mm). Once you've got it at the perfect length to hold your hatch open at the angle you want, you just tighten the black plastic knob to lock it securely in place. It's a simple, heavy-duty piece of hardware. One end typically mounts to the hatch lid itself, and the other end mounts to the frame or wall. It's universal, so it should work on many different types of hatches, not just on boats but also on campers, storage boxes, or even certain furniture. It comes as a single piece. Install it once, and you'll have a reliable way to keep your hatch open for ventilation or easy access.