Matala filter pads are the best filtration media available on the market today. Matala comes in three different grades for biological filtration. BLACK: Very Coarse = good for high flow applications GREEN: Coarse = allows good flow, yet filters well BLUE: Medium = traps a lot of debris, medium flow GRAY:Fine = lower flow, but thorough filtration For best results mix layers of Matala using a coarse layer first for large solids removal followed by denser layers for fine debris. Due to its unique material design, Matala media is much more rigid than traditional polyester media. This makes it easier to clean but does not allow it to be rolled up like other media. Matala is sold in two sizes of flat sheet. Half Sheets = 39 1/2" x 24" x 1.5"can ship UPS Full Sheets = 39 1/2" x 48" x 1.5"must ship via motor freight or pick up will call.Half Sheet Gray.
Matala Filter Mat Half Sheet Gray B003EHQSGG