1. Material: fireproof fiberglass 2. Use: cut the hole according to the size of the chimney and stick it on the tent for use 3. Temperature resistance up to 300 degrees celsius 4. Fireproof, temperature resistant and non-flammable 5. Thickness: 5.0mm 6. Dimensions: outside 23x20cm; inside 16.7x19.6cm 7. Weight: about 42.5 grams
