Rectangular Porthole Hand polished and anodized aluminum frames and "smoke" color acrylic panes of 3/8 in. thickness Outside diameter: 17 3/4 in. x 10 25/32 in. Inside diameter: 16 7/8 in. x 9 15/16 in. Clamping style no need to drill holes
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ALL products we sell are factory new and come with the full Manufacturers Warranty!