XL-4001 steel air-flow raised floor

steel air-flow raised floor:1. Size: 600*600*35mm2. full steel , HPL or PVC punched tile3. surface punched panel which is SPCCID hard steel of Shanghai Bao sttel,4. Manual welding for the bottom square tube, origination in domestic.5. Imported paint, anti-rust.6. prevent static validlyfireproof, dustproof7. exact dimension for the hole of tile and panel ,good ventilation function8. 17% 50% ventilation rate,satisfies different environmental requirements.