Temperature-Activated Lid: Innovative hinge with heat-sensitive wax automatically opens lid when temperatures exceed 70℉ and closes as it cools with no electricity needed Industry-Leading Warranty: 5-year warranty for added peace of mind Optimal Insulation: Double-wall PC lid panels allow natural light transmission while retaining heat for thriving plants 100% Cedar Wood: Made from durable cedar wood for exceptional strength and natural resistance to decay Heavy-Duty Steel: Powder-coated steel legs and hardware provide superior resistance to rust Easy Drainage: Wide bottom slats and durable mesh liner ensure optimal drainage to promote healthy root growth Compact Design: Saves space while offering ample room for starting seedlings and protecting plants through every season Ready to Assemble: Pre-cut, pre-drilled, and pre-stained pieces offer easy installation ***Please note: Options of excessive weight or bulk will be shipped via freight carrier and our Oversized Item Delivery/Return policy will apply.