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CT Greenhouse high tunnels are NRCS-eligible, built to CPS 325 · see how EQIP funding works
Home/Building Supplies/Polycarbonate sheeting/Double H Aluminum Extrusion
For 8 MM Polycarbonate sheeting, used to join two pieces vertically. Cuts easily with either a hack saw, circular saw, band saw or sawzall. Will acommodate a very slight bend but not too much.  See our base and cap for curved roofs.
 
Secure through middle track with 1.5" tek screws. Flat side goes to the inside with flutes facing out.

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