Please be careful not to make the wrong size. SPF-R45F12-UA1 Color/Pattern: Natural (NL) Type: Mixed flooring type; *For board thickness 0.5 inch (12 mm) only. Material: Insulated Lid: Polypropylene, Insulating Bottom Lid: ABS + Hard Urethane Foam Insulation Outer Frame: Frame PP + Insulation EPS; Inner Lid: PET Floor Opening Dimensions: 16.1 x 22.0 inches (410 x 560 mm), Flooring Cutting Dimensions: 15.2 x 21.9 inches (382 x 532 mm), Packaging: 1 set/case/case/case: Inspection port (45000 mm) x 600 type. 1 x slide core, 10 x caps, 1 x inner lid, mounting screws