Materials: Frame: high-strength aluminum alloy. Fabric: 800g/sqm PVC coated polyester for top cover. Quality: Waterproof, mildew resistance and ultraviolet radiation resistance, anti-fire according to DIN 4102 B1, M2. Tensile strength: Wrap 2900N/5 cm, Weft 2600N/5 cm Tear strength: Warp 410/5 cm, Weft 360N/5 cm. Extension: Warp 15%, Weft 20% Applicable Temperature: -30¡ãC~+70¡ãC. Features: Clear span design, 100% room is available, could be set up on flat, lawn and so on. Easy to install and teardown. Optional accessories: floor system, ground sheet, glass door and roof curtain/side wall.