Shelter your vulnerable seedlings and young plants from the wintry blasts that venture into spring, and pests as well. This easy-to-assemble double cold frame includes durable UV-protected plastic panels and sturdy aluminum frames. 36 words.Dimensions for Double: 42.5 L x 41.5" W x 21" H.Dimensions of Single: 40.9" L x 20.8" W x 16.9" H."