Perfecto Manufacturing APFR01062 35-Inch Marineland Plastic Glass Canopy Back Strip for Aquarium, Medium, Clear Glass Canopy Back Strip Replacement Part For Perfecto Aquariums Made Of Plastic Material Back strip with groove to fit any glass canopy, can be cut for perfect fit Available In Clear Color And Small Size Intended For A 36-Inch Tank With Length By 2-1/4-Inch Width By 3/16-Inch Thick