Check the listing for details. Aquarium Lid Polycarbonate Twin Wall 10 Gallon - Half Cut Deep. Condition: New. Listed at 19.99 USD. Hi all aquarium lid seekers, Tired of evaporation? Want to keep the heat in your tank to save on electricity costs? Not liking glass lids because they don’t fit correctly, are sharp and cost too much. Not like acrylic because of the warping? You are in luck because polycarbonate aquarium lids are great. I have been using them on all my tanks in the fish room for several years. I have various polycarbonate twin wall 1/4” (6mm) thick lids that works for all of my aquariums. It is the same material used for greenhouses and transmits light so that plants can still grow. -10 gallon high. Fits Aqueon brand aquariums and measures together exactly 19.25” wide x 9.5” deep. Each section measures 9.6” wide x 9.5” deep. The 2 lids do not have hinges but will have 2 door handles included (but not attached). You can stick the door handles yourself. Photos #1-7 are of the actual product. Photos #8-15 are not of the product but show an example of the light transmission of the aquarium lid. There is a cut out on the right rear side of the tank. Tank not included.