Order this Oatey Gray PVC Shower Pan Liner for delivery. Ready-to-use waterproofing membrane. For tile showers or other concealed waterproofing applications. Marked in 6 in. increments for ease of measuring. Made of durable, abrasion-resistant 40 mil thick flexible PVC for long-lasting use. Superior cold weather characteristics. 6 ft. x 10 ft. pre-cut liner for quick installation. Ready to use on tile shower installations up to 5 ft. x 9 ft.