Description Description A strong grid mesh covers the window, making it fairly safe for high pressure applications. Top flange diameter: 15 cm Mid flange diameter: 20 cm Bottom flange diameter: 26 cm Bottom flange thickness: 15.6 mm Inside diameters: in the bottom flange: 148 mm in the window: 102 mm Bottom flange mounting holes: 8 x 7.4 mm on a 120 mm radius Bottom flange mounting holes: 12 x 9.72 mm on a 116 mm radius Height: 15 cm Weight: 12.9 kg View AllClose