2 Pack 4in Round Brush Grommet for Raised Floor Cable Management

In this review the 2 Pack 4in Round Brush Grommet is judged as a straightforward, practical solution for organizing large cable bundles in server rooms and home network setups; the single biggest reason to buy is its size efficiency - the 4in diameter accepts thick power and data conduits or PDU plugs without fuss. The review finds the split design and screw fittings useful for retrofitting into existing 4in holes, and the impact resistant plastic with dense bristles keeps dust and debris at bay while allowing frequent cable changes.

Key Features

• 4in diameter: accommodates large cable bundles and PDU plugs so users do not have to compress or reroute bulky cords.
• Split design: allows installation around existing cables without disconnecting equipment, simplifying retrofits in live racks or walls.
• Four screw fittings: secure the grommet to wall or ceiling surfaces for a stable, permanent cable pass-through point.
• Impact resistant plastic: provides a durable collar that withstands handling in busy data centers or utility rooms.
• Bristle barrier: the brush insert reduces dust and debris entry while still allowing cables to move through freely during maintenance.
• Versatile application: suited to computer rooms, home data closets, and raised floor panels where organized cable routing is needed.

Who It's For

The grommet suits IT technicians, facilities staff, and dedicated home networkers who need a clean, reliable pass-through for thick power or network bundles. Its 4in size is ideal when smaller grommets leave too little room for power distribution units or grouped cable runs.

Those who should look elsewhere include users who need a sealed, weatherproof feed or require integrated firestop or EMI shielding features; this product focuses on mechanical cable routing and dust control rather than environmental sealing.

Pros & Cons

Pros

• Large 4in opening neatly handles thick cables and PDU plugs without forced bends.
• Split design minimizes downtime by allowing installation around existing cabling.
• Durable impact resistant plastic and bristles help protect cables and reduce dust ingress.
• Four screw fittings provide a secure attachment to walls, ceilings, or raised floors.

Cons

• Not designed to provide a watertight or certified firestop barrier for penetrations.

Specifications

Brand	Threlaco
Quantity	2 pack
Inner diameter	4 in
Mounting	Split design with 4 screw fittings
Material	Impact resistant plastic with brush bristles
Intended use	Raised floor, wall, ceiling cable management

Our Verdict

The 2 Pack 4in Round Brush Grommet is a practical, cost effective choice for anyone needing to route large cable bundles through 4in openings without major rework. It is especially good value for data closets and raised floors where quick installation, durability, and dust control matter; those needing sealed or code-certified penetrations should consider specialized alternatives.

Frequently Asked Questions

Will this fit into an existing 4in hole?
Yes, it is tailored for insertion into 4in holes and the split design helps seat the grommet without removing existing cables.

Can it be mounted on walls or ceilings?
Yes, the unit includes four screw fittings so it can be secured to walls, ceilings, or raised floor panels.

Does the brush stop dust completely?
The bristles reduce dust and debris entry and protect cables, but the product is not a sealed dustproof enclosure.