Marineland Perfecto Glass Canopy - 36 in. x 13 in.

Bought for my 38 gallon. It arrived quickly, but was 1/8 " too wide and would not fit. Specifications listed correct dimensions but the glass was not cut to that. Had to take it to a glass shop to be cut as there were no more in stock here.

I bought one today in-store and I'm very disappointed. There were no instructions for attaching the plastic back panel. I first tried snapping it on, but soon found this to be impossible. I then tried sliding it on from the end, however it was so tight that the glass pane shaved off slivers of plastic and soon ground to a halt. After 45 minutes of trying unsuccessfully to force it, I gave up. I'm now using the lid without the back panel, which means there's a two inch gap in the back for the entire length of the tank where fish can potentially jump out.

First: the canopy arrived in perfect condition because of the excellent packing job. I'm always a bit concerned about mail ordering things made of glass.
I could not find a canopy that would come close to fitting locally, so I ordered this one knowing that they only guarantee it will fit a Perfecto aquarium, which mine is not. Also another reviewer talk about having to have his cut down by 1/4". Mine is just about 1/8" too long, but as I said I knew what I was getting into, hence the 4 stars. Some day I may get the 1/8" shaved off, but it's only noticeable if you're up close, and it does the job I needed it to do.