Snap-in swivel lid allows for partial opening or full opening Protects cables from being cut by sharp panel edges See more options on our store! Manufactured from durable, flame-retardant ABS resin 4" in diameter, 1 1/2" deep Grommets are sleeves which are installed into raised floor panels. They protect cables from being cut by the sharp edges created after cutting into a panel for wire access. In addition, they protect employee fingers from sharp panel edges. Snap-in swivel lid allows for partial opening or full opening. Consists of an outer flange and a two part insert. Adjusts from 1/2" - 2 1/2" to accommodate different cable sizes. A 4" hole is needed for installation, internal cable opening size is 3 1/2". 1 1/2" deep. Color: Black. Six grommets per order.