- (4) automatic louver openers

Two automatic roof vent openers

Space efficient

Its design

Palram - Canopia | 6x4 ft Hybrid Greenhouse Kit - Gray With 0.8mm Polycarbonate Glazing Staff Picks - (4) automatic louver openersThe Palram Canopia Nature Hybrid Series 6 x 4 ft Greenhouse Kit is an ingenious balance of two advanced polycarbonate panels for the optimum environment. The crystal clear side panels offer over 90% transmission for growth, while the 4mm twin wall roof blocks up to 99. 9% of harmful UV rays to prevent plant burn. Add to that a ton of features, and the Nature Hybrid greenhouse is perfect for any growing enthusiast. The integrated rain gutters and down