In addition to a 100 micron rating for exceptional particulate removal, they feature welded seams, which, unlike threaded seams of similar products, will not breakdown over time. They have a singed finish, which reduces wear and prevents release of fibers back into the water column. Finally, the plastic collar simplifies installation and easily fits standard sump fittings.

Small: 10 x 30 cm / 4” x 12” (10 cm / 4” plastic collar)
Large: 17.5 x 40.5 cm / 7” x 16” (17.5 cm / 7” plastic collar)