Application It is suitable for residential buildings, commercial buildings, industrial plants, warehouses, hotels, restaurants, shopping malls, etc. Specification Material: Aluminum Alloy Color: Black Shape: Square Opening and Closing Angle: 90° Package Size: 82.5*82.5*9.5cm/32.48*32.48*3.74in Outer Size: 81*81cm/31.88*31.88in Inner Size: 70*70cm/27.5*27.5in Gross Weight: 7.9kg/17.42lbs Net Weight: 7.1kg/15.65lbs Package Included 1* Roof Hatch.
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