Factory-direct-selling garden greenhouse with 10-year warranty 1. Panels: 4mm PC 2. Frame: Alloy,1mm thick 3. ... -year warranty1. Panels of greenhouse: 4mm Polycarbonate(PC), 5-year warranty (6mm is optional), Strong and weather resistant, unbreakable, clear, 200 ... each model: Factory-direct-selling garden greenhouse with 10-year warranty