This 12’W x 16’L Mini Greenhouse has a single layer of 6 mil plastic for the roof and ends.  It is used as a “season extender”.  To make it a year round structure a second layer of 6 mil plastic would be added to the roof, and an inflator fan kit would be supplied to blow air in between the layers.

This building sits on a 4” x 4” pressure treated beam, which is anchored into the ground.  Ventilation can be done manually  (through doors and windows or by adding roll-up sidewalls), or mechanically by adding an exhaust fan.