36 in x 36 in Adjustable Threshold Wheelchair Ramp with 800 lb. weight capacity. This ramp is designed so that it can be installed and used without interfering with doors that swing outward. Adjustable to accommodate rises between 3 in. and 6 in. Please contact USA RAMPS for any questions about ATH3636. Returns are accepted within 30 days from date of purchase for refund or exchange and buyers are responsible for return shipping. This item has free shipping, the actual shipping costs will be deducted from a refund. Returns are not accepted if an item is used, missing parts or pieces, or show signs of any damage. Items do not include mounting hardware unless otherwise stated. Returns are subject to a 15% Restock FeeStatements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.