... door 4.Many designs Flower greenhouse with 6mm PC board 1. Panels: 6mm Polycarbonate(PC), 5-year warranty (6mm is optional), ... weather resistant, unbreakable, clear, 200 times stronger than glass PC blocks out 99.9% of harmful solar UV 2. Frame ... of greenhouse: double slide door5. Easily assembled greenhouse, without welding points to damage the greenhouse structure.6. Installation: Easy installation, ...