Ducting Size: 8cm (diameter)(or 10cm) x 5 feet (length)(or 6 feet) when fully extended<br> Thermal : Temperature range from 0 ~ 185°F.(-18℃ ~ 85℃)<br> Wide Applications: Kitchens, Bathrooms, Greenhouses, Grow Rooms, Grow Tents, etc<br> , aluminum two-layer dust, high heat resistant;<br> Anti rust, anti corrosion, easy to wipe lean with a moist rag;<br> Specification:<br> Material: aluminum foil<br> Size #1 (dia x H): approx. 8x150cm/ 3.15x59.06inch<br> Size #2 (dia x H): approx. 8x200cm/ 3.15x78.74inch<br> Size #3 (dia x H): approx. 10x150cm/ 3.94x59.06inch<br> Size #4 (dia x H): approx. 10x200cm/ 3.94x78.74inch<br> Package Includes:<br> 1 x Ventilation Duct Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-WuhanGQ shop 3