Grommets protect cables, and can be used on any 4” trade-size electrical knockout or used on 4-1/2” fan knockouts on Middle Atlantic Products top options. Allows for ganging without using expensive electrical fittings. GK-4G gland grommet blocks dust and helps control airflow.

• Round open grommet fits 4” knockouts on compatible racks
• Open ring style covers metal edges to protect cables
• Sold in packs of 4 pieces