PY1057 Features: * Frame material: Aluminum * Panel material: Polycarbonate * Get an early start on seedling * Extends the season for herb and vegetable gardens * All components are corrosion resistant * Adjustable roof doors provide ventilation and easy access * Adjustable, ultra-clear covers provide excellent ventilation * Allow maximum light transmission * Crystal-clear polycarbonate SnapGlas panels are nearly indestructible Options: * Compact size fits almost anywhere but still provides over 9 square feet of growing space Dimensions: * Overall dimensions: 21"" H x 41"" W x 41"" D