Uv-Blocking Polycarbonate Panels - Our aluminum greenhouse is equipped with Uv - protected polycarbonate panels. These panels provide a safe haven for plants by filtering harmful rays while maximizing beneficial sunlight. They effectively block harmful Uv rays, creating an ideal environment for your plants to thrive and preventing sunburnRoof Vents - Our polycarbonate greenhouse with aluminum frame has an adjustable roof vent. You can mount it on any panel and customize its position during assembly. Our polycarbonate greenhouse features a secure lockable door to protect against windUpgraded Aluminum Frame - Engineered with high quality aluminum parts, this winter polycarbonate greenhouse with automatic roof vents is built to withstand the elements. Its reinforced, weather resistant frame offers year round durability