Classic 4 Tier GrozoneIdeal for germinating seed, propagating plants, growing and protecting fruit and vegetables or simply extending the growing season Max Flexibility Extra strong, rigid design, easily removed shelves for growing through Max Shelves Durable powder coated steel frame and shelves Max Strength high density reinforced PE cover Max Access Front Zip up panel fully opens and easily clips back allowing total access Max Ventilation 2 Vent holes to improve air