Gray Prime-Line Products M 6191 Shower Door Bottom Hook Guide, 2 Pack. Product Details Product Description This shower door guide is constructed from gray plastic. It helps to keep your shower door on its track. This style guide fits on Keystone Brand and similar styled tub enclosures. From the Manufacturer This shower door guide is constructed from gray plastic. It helps to keep your shower door on its track. This style guide fits on Keystone Brand and similar styled tub enclosures. For use on sliding (top hung) shower door (tub enclosure) systems manufactured by Keystone These shower door bottom guides help keep sliding door panels centered to their respective tracks Constructed of gray plastic Easy 2-fastener installation Guides measure 3 in. wide x 1-1/2 in. tall w/2-inch hole center spacingft.s Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.