You can see the double rib design we are going with this season on the poly low tunnels ..every 10 feet a rib is placed next to a rib and placed over the cover and locked in place ,This allows us to vent like an ordinary cat tunnel without ropes and crazy amount of sand bags either . #polylowtunnels #winterfarming #mountainriverfarm #novascotia #patbattle #fourseasonfarming #seasonextension (at Mountain River Farm)
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