Polycarbonate Twinwall Endwall Covering Kit Size:30' Greenhouse #1811 (2 Sides) 20'x100' Semi-Gable greenhouse frames have

20'x100' Semi-Gable greenhouse frames have taller sidewalls that reach a higher peak than the Quonset greenhouse frame type

20-foot greenhouses with 48-foot length provide a 960 sqft greenhouse space

low-profile design that effortlessly fits into tight spaces

75 MILS EACH (+/-10%) TENSILE STRENGTH (GRAB METHOD) WARP 220 LBS

Environmentally friendly R410A refrigerant

Polycarbonate Twinwall Endwall Covering Kit Size:30' Greenhouse #1811 (2 Sides) 20'x100' Semi-Gable greenhouse frames haveTwin Endwall Kits (Framing + Poly Sheeting) feature double layer polycarbonate panels and all of the hardware you need to assemble them: Twin Wall End Wall for 12' Width: (6) 10' 90 Degree Flashing (4) 3'x8' Twin Wall Sheets (4) 12' H Channel (2) 12' J Channel (125) Neoprene Screws Twin Wall End Wall for 20' Width: (8) 10' 90 Degree Flashing (9) 4'x8' Twin Wall Sheets (8) H Channel (4) J Channel (250) Neoprene Screws Twin Wall End Wall for 30' Width: