The 16ft x 8ft waltons extra tall polycarbonate greenhouse is ideal for any large garden whether youre a keen amateur or an experienced gardener this greenhouse is supported by a strong aluminium frame which has been specially treated and painted an attractive evergreen colour this coating also protects the frame from corrosion and makes it a lot easier to maintain the building features double sliding doors which make for easy entry and is space saving too the robust aluminium frame is gla