Support System: Self SupportingBottom Frame (in): 9/16 Acrylic Color: Smoke Gray Hatch Weight (lb): 4.9 Acrylic Window Thickness (in): 5/16Dimensions. Length (in): 13. Width (in): 13. Height (in): 1. Radius (in): 2 7/8. Cut-out Length (in): 10 1/4. Cut-out Width (in): 10 1/4. Cut-out Radius (in): 1 11/16Mounting Instructions Fits to flat surface with maximum tolerance +/- 0.039 in. Fixing size on hinge section use M6 (1/4). Fixing size for bottom frame use 0.197 in No.10 UNC 2 BA CSK screw.