Smartmarine Boat Hatch White 4" 6" 8" Round Non Slip Inspection Hatch w/Detachable Cover for Marine Boat Yacht (6 inch)

Dimensions were perfect. Excellent quality.

Why did you pick this product vs others?: Used this in my RV to enlarge the access that was already there when re-plumbing the shower with PEX A. Marked the hole, cut it out, marked the screw and piloted the screw holes, used some white butyl tape, and screwed it in as I heated up the area to allow the butyl to spread and form an water tight seal. Worked great. No leaks, and it looks good compared to the yellowing plastic access that was previously installed. All in all ilit suited my needs and works for what I'm using it for. I call that a wim at a good price.

I used this to make a hatch on the top of my RV water tank so I can clean it out more effectively if needed. This did the job.

This is a solid 4 stars for the price. I installed it 2 years ago as an access hatch in my camper van's water tank and it has done its job since then. It's fairly sturdy and looks nice. But it will never be watertight for most people's use cases. So why is this thing not watertight? Well, to use an O-ring as a seal like this design does you need even compression across the gasket, something keeping the gasket in the right place, and sufficient tightness. This design doesn't have all three: the plastic plate is too flexible to provide even compression, the gasket is not held in the ideal place, and you cannot get great leverage on this thing to tighten it with the small finger holds. If you were to mount this to a very stiff and flat material - say, steel of sufficient thickness - and really tighten it hard, you will likely get it watertight, but most people are working with a backing that is either not truly flat or not sufficiently stiff. There is also no form of locking to keep it tightly closed, so once you get it watertight that is no guarantee it will stay that way. If you really need watertight - true 100% watertight, as in on the side of a water tank or to keep water out - you need a gasket with even pressure and something strong enough on both sides of that gasket. You will also want a design that allows you to lock it closed. Search for "Watertight Compression Access Hatch" for one good design. You'll be spending a minimum of around $100.

Very easy to install and durable.

Easy to install and fit perfectly

It fits to my boat

Excelente calidad.

Cover for the floor fit and works perfect

Great product

looked good for a few months then are all cracked at the end of 1 season and they are in my well so they never get stepped on. spend more money and find another product

I ordered three of these to install in the transom of my boat. After cutting my boat and installing them I found out that they leak!! Very disappointed as I put two big holes in my boat to find out they leak around the o-ring seal. Sure glad I tested them before going out on Lake Superior and potentially sinking my boat. Do not buy, absolute junk!!