I hesitate to be negative and this is probably suitable for most people. Unfortunately the cross-pieces are twist-and-lock, rather than being spring-loaded as I had assumed. This means you must slightly over-extend them, then jam them into position... since I have paint on one side of the aperture and wallpaper on the other I cannot seriously contemplate jamming a couple of sticks across the gap each night, scuffing the paint and tearing the paper. So, not suitable in my case but possibly ideal for other people.