The twin-wall polycarbonate acts as a double plane window keeping the cooler air in during warm months and insulating the greenhouse from cold air in the wintertime

The Opaque PE cover has a dual zipper door that easily rolls up and ties off at the top to allow fresh air to circulate in

the unit has control of the attendant vacuum pressure

Shipping Weight: 1

Biohort | 51 Gallon Leisure Time Deck Box - Dark Gray Roof Vent The twin-wall polycarbonate acts asThis Biohort 51 Gallon Leisure Time Deck Box will keep your outdoor gear safe, dry, and organized. Designed and manufactured in Austria of sturdy and durable galvanized steel, the Leisuretime box is engineered to last. Its understated and timeless look will compliment your backyard, pool, terrace, or patio. A perfect stylish storage box solution for your large poolside accessories, patio chair pads, seat cushions, covers, yard accessories, lawn games,