Check the listing for details. K2 MiniRail XPRess Base 17" w/EPDM, Mill KIT 4000073. Condition: New. Listed at 12.46 USD. The MiniRail XPRess Base is a 17 inch section of rail (with EPDM inserts on the bottom for waterproofing) that attaches to the peaks of the trapezoidal metal roof. RETURNS: At SanTan Solar, we work hard to ensure a positive shopping experience with us. For purchases made directly from our online store, if for any reason you are not fully satisfied with your purchase, you may return your products with the original package within 60 days if they are undamaged and unmodified. We cannot guarantee that your item will be accepted for a refund or exchange if it does not meet these requirements. Other extenuating circumstances require special authorization. SanTan Solar will pay the shipping costs of the returned item(s) for the following reasons: carrier damage, defective product, product inconsistent with advertisements, incorrect product received, or for any extra products you did not order. For all other reasons, customers are responsible for the return shipping fees. *Please Note: SanTan Solar will not accept returns with product modifications as it voids our warranty policy. Any modified products received will be returned to you at your expense.