Middle Atlantic - equipment racks
Grommet Kit, 1" x 7" Gland, 4 pc.

MA-GK-1X7G

Fits knockouts in select racks; lets cables through but helps keep dust out

Variations
1" x 7" Gland, 4 pc. 3" Gland, 4 pc. 4" Ring, 4 pc. 4" Gland, 4 pc.