Functional Material and Design: enjoy the flexibility of the aquarium lid made from acrylic, a material that is less fragile and lighter than glass, the clear color provides transparency for easy observation and lighting within the fish tank, remember to tear the film for optimal clarity; Please measure your tank opening to the closest millimeter before purchasing Detailed Packaging: the package includes 2 aquarium lids and 1 hook knife; The hook knife can help you cut the appropriate size for the aeration pump Size Appropriateness: with the dimensions approximately 22.95 x 11.5 x 0.28 inch/ 58.3 x 29.2 x 0.7 cm, it serves as an optimal cover for 33 Gallon Long, 40 Gallon Show, 55 Gallon Show aquariums 48" Long x 13" Wide Aquariums with center brace; This considerable size provides your aquatic pets with the necessary security they need; Please check the product size carefully to ensure it fits your fish tank Easy-to-handle: each of our fish tank lids comes with two-inch wide plastic straps and handles, for easy management and movement, being lightweight acrylic, feel at ease when needing to change or handle the aquarium top cover Can be cut to accommodate air ducts, heaters and other equipment; Canopy is equipped with handles and can be folded open Features: Easy to clean and maintain Cleaning your aquarium canopy is a breeze owing to its acrylic composition that is uncomfortably resistant to dirt, made clear and transparent for easy spotting and cleaning of any dirt build up, it ensures a clean environment for your aquatic. Important note Please consider confirming the size of your aquarium before purchasing our fish tank cover, despite its adjustable nature, it is advisable to confirm the compatibility of our product with your specific aquarium's dimensions. Specifications: Material: acrylic Color: clear Size: about 22.95 x 11.5 x 0.28 inch/ 58.3 x 29.2 x 0.7 cm Package includes: 2 x Aquarium lid 1 x Hook knife Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.