CarCapsule CC18F Large 18' Indoor Premium CarCapsule with Improved HD Fan and Improved Charcoal Filter Durable Clear 0.30 thick reinforced 840 Denier fabric PVC Fan Changes Air 3 to 4 times an hour with an activated charcoal filter included BASEMAT is 0.45 Tarpaulin that is impervious t oil, gas and antifreeze Initial set up time is about 15 minutes. CarCapsule will inflate in about 6 minutes One Year Warranty. Rust free