Best trap door hinges
I have a trap door in my basement floor at home to get into the crawl space.
Right now there are no hinges on the door, it's more like a "loose hatch" that can be lifted up to get access.
If possible, I'd like to hang it like a proper door and want to know what type of hinges you think I should use on this. I'd like to find the best trap door hinges possible as it's quite a heavy door and I want it to last. Ideally, hinges that are concealed under the door would be best because the door is carpeted on top and I don't want to interfere with that.
It lifts up and to the rear to gain access, and the door is made from chunky 2" x 6" therefore is 1.5 inches thick.
Any help or advice would be gratefully appreciated!!
Thank You in advance,