Halls Halls Double Cold Frame Greenhouse Reviewhttp://tinyurl.com/mwl4q6n Halls Halls Double Cold Frame Greenhouse An economical alternative to a greenhouseUpgraded! Clearer twinwall polycarbonate panesGlaze allows for 70 percent light transmission4 hinged sliding vents allow for ample airflowIncludes 4 stakes so you can anchor it to the ground
