Cold Frame Strong and Dependable Rust resistant aluminum frame 4 ft (L) x 4 ft(W) x 22in(H). Height equals to 15in of cold frame and 7in of the cedar raised bed. 4mm twin-wall polycarbonate panels. Tapes to seal the ends of panels are included to ensure protection against algae, fungus, dust & condensation Includes 4 vents that lift or slide sideways for access and ventilation. Growing area of 16 sq ft