The Florida building code rated generator support pad is lightweight when purchased. but weighs enough to meet code requirements up to 180 mph wind loading when filled. Each pad includes a unique gelling agent that. once water is added. forms a solidus gel. Unfilled weight is 46 lbs. and 330 lbs. once filled. UV-resistant. high durability construction. NFPA37 compliant.Lightweight for transport. extremely heavy once filledUV-resistant. NFPA37 compliantMade in USAEasy to installHeavy duty. built to last in all weather conditions