Too tight a fit - a nightmare to sort. Several finger nails broken and 1 of the 2 Perspex covers snapped against those dreadful little metal pieces that hold the picture in place. They were the problem; they stuck out and affected the fit. Some of them got caught behind the picture and bent so I couldn’t get the picture in place. I know the measurements of my 2 pictures was precise but due to the metal bits I ended up damaging the mounts. I removed some in the end for the picture that’s a present - used tape to secure the picture. Sadly my picture has the broken perspex. Furthermore the wood was rough and I got a splinter plus bits went all over the perspex and were hard to get off due to static. One of the hardboard backing pieces was really rough. Not impressed and would certainly not recommend.