Rimer & Rimer's 4" High-Flow Filter Media Cups will replace all those filter socks you have hanging around. Made out of a BPA free LDPE, this High-Flow Filter Media Cup has a flexible one-piece design that holds any filter media. The round design allows the Cup to slide into place, regardless of which "side" slides in first. The opaque color will easily hide any blemishes that may occur from changing out filter media.
Dimensions: 6" Height and 4" Diameter
Cup Material: 100% Virgin BPA free flexible Polypropylene
Directions: Wipe the cup with distilled vinegar, then simply place Filter Media Cup into your filter tray, and fill with desired filter media. To clean just replace your filter media. No rinsing necessary.
Note: Any media smaller than 1/2" in diameter needs to be put in a media bag.