All Glass Aquarium AAG21248 Fluorescent Deluxe Hood, 48-Inch

This is a 3 part “hood” for an aquarium that has a divider in the middle. I bought this for my 55 gallon tank that has no divider, thinking it would work. Some of the reviews I read were quite unclear. I have to set the bottom two pieces on a piece of glass that spans the length of my tank. In the future I will try to get a strong enough piece of plastic to go across the center of my tank from front to back so that the 2 bottom pieces can rest on it. I have a piece calked in that spot now to cover the hole that remains between the two bottom pieces because if you don’t have the divider there is a gap of about 1 inch between the two sections. Each of the bottom pieces have a window to let light through, cutouts at the back for filters etc., and an access flap in front. They measure 11 1/4 inch deep and 23 inches long. (THESE PIECES COME IN THE BOX TAPED TOGETHER TO KEEP THEM FROM SLIDING AROUND BUT THEY DO NOT REMAIN TOGETHER, you MUST have a way of supporting them at the center of your tank.) The light sits atop the aquarium rim meaning it extends the entire length of the tank, not just the length of the 2 bottom “insert” pieces. If I had bought these for my newer aquarium that has a divider there would be no problem. I have ways of making these work. I am quite happy with the product otherwise. I only wrote so much in this review so that there is no mistaking the fact that this is a 3 PIECE hood and NOT A TWO PIECE hood. You NEED a DIVIDED top tank frame.