AMERICANA™ The Americana™ 12' x 12' Hybrid Greenhouse is large enough to create that garden oasis you've always wanted! The large footprint and barn style roof provide ample room for both gardening and leisure space. With double, swinging doors and two vent windows you'll have abundant air flow to create a comfortable environment for you and your plants. With the Americana™ you have room to grow and room to share your love of gardening. Barn shape Widened peak area creates more headroom Smart Sun Management Twin Wall polycarbonate on the roof protects from strong noonday sun and retains heat at night while clear polycarbonate side panels allow more light transmission of morning and evening sun exposure.