Danner 12201 Poly Pad, Pack of 3 Highest quality materials used to make high-end aquatic supplies Provide the best environment for your aquatic life with Danner products 100% designed and made in the USA with quality goods Poly pad For all 1000 and 2000 series filters Fine 1/2-inch thick material Approximately measures 12-inch length by 12-inch width Foam coarse poly combo pack