Plastic sheeting is used as a covering to help let in plenty of light while keeping the cold out. The greenhouse is also heated, and can maintain a 40 deg F temperature differential with 14,000 BTUs.
The Family Handyman on MSN2mon
Unconventional Ideas for GreenhousesThe pallets support the base of the greenhouse walls, and PVC pipes with plastic sheeting run along the top and sides.
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