Sigma 39 (Gen III) Alpine Thickness is 16mm

Thickness is 16mm

10mm Double-Wall Polycarbonate Panels

and advanced UV protection in a lightweight sheet

CoverLite® 6mm twin wall multiwall polycarbonate sheet provides high light transmission

Shipping full-size profiles may pose challenges

Sigma 39 (Gen III) Alpine Thickness is 16mmTake backyard growing further with the Sigma 39 (Gen III). Built with heavy duty materials, this greenhouse supports 3 to 4 seasons of cultivation, giving you the opportunity for multiple harvests throughout the year. Its advanced engineering and durable construction bring the performance of a commercial greenhouse into a refined backyard structure. Exact size: 118. 1 x 83. 9 x 472. 4 inches The end to end airflow, spacious size, and high 7' ( 2. 13