Hortitech 20'x100' Quonset Auto External Light Deprivation Greenhouse gmc-gh You may consider the 30'x48'

You may consider the 30'x48' frame which is almost the same size but will fit standard greenhouse plastic sizes

your output BTU

power shutter

but instead of securing the plastic with channels and wiggle wire

Smart logic prevents false triggers from dust and other slow build-up of accumulation

Hortitech 20'x100' Quonset Auto External Light Deprivation Greenhouse gmc-gh You may consider the 30'x48'The 20' Auto External Light Deprivation Kit is complete and ready to go. Kit includes a 1 7 8" x 2 3 8" frame with your choice of truss spacing. A full ventilation system includes exhaust fans, automated louvers, and HAF fans to help lower humidity. Woven membranes with a 4 year warranty insures protection from the elements. A fully automated light deprivation package makes controlling the light cycle effortless with 2 powerful 100nm motors and a