It's only ~8' square, but it might be useful for outdoor growers with
those cold nights that occasionally occur in frost free zones.

PORTABLE GREEN HOUSE

http://www.harborfreight.com/cpi/cta...emnumber=41334

Vented for proper airflow with a sturdy cast iron base to withstand
the elements. Constructed of all steel tubing and PVC material with
nylon reinforcement.
Door: 5 ft.H x 3 ft. W
Dimensions: 106" L x 96"W