The new design has three primary features: (1) a rectangular collar having
a centrally located circular cutout with sewn loops formed on the outer
edges of the collar; (2) a filter bag having top edges attached to the
rectangular collar along the periphery of the circular cutout so that the
bag is inserted within the cutout and drops below the level of the
collar; and (3) a heavy gauge steel wire inserted within the sewn loops
of the rectangular collar forming a structural frame along the periphery
of the rectangular collar. The structural frame is preferably formed with
overlapping portions coupled together with a retaining means. The
overlapping portions are slidably moved relative to one another to change
the first and/or second dimension of the frame so that the filter can fit
within catch basins openings of various measurements.