SIZE: Large - 107'' L x 36.25'' W x 36.25'' H, Medium - 71.15'' L x 36.25'' W x 36.25'' H, Small - 36.25'' L x 36.25'' W x 36.25'' H TEMPERATURE: Keeps the plants internal moisture and stops young plants from frost UV PROTECTION: Protects your plants from hot summer damaging sun rays ASSEMBLY: No tools required for assembling, plus a strong frame FEATURES: 2 zippered windows for seed breeding and insect prevention This greenhouse will allow your plants to grow in a loving atmosphere, they will flourish like never before. You can plant it year round the cold weathers wont damage it. The plastic cover protects it to maintains the temperature so the plants can enjoy the photosynthesis. WARNING: This product can expose you to chemicals including di(2-ethylhexyl) phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.