Other manufacturers seem to list many different sizes which you will receive when you place an order for this item. What can I say, it's that simple. The product comes in two sets of caps for the Aqueon 75/90 tank with center brace. When assembled they are each 22" 1/8" wide and 16" 3/8" deep. They fit perfectly in the recessed pockets on either side of the tank. They are well made from fairly heavy 3/16 inch glass. I am very happy with the purchase. Thank you to others who posted comments there which allowed me to gather enough information to order the correct set.
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