APC by Schneider Electric Koldlok Surface Mount Raised Floor Grommet - AR7730

APC by Schneider Electric AR7730 Koldlok Surface Mount Raised Floor Grommet

Overview

The AR7730 is a surface-mount raised floor grommet designed to seal cable penetrations in raised-floor data center environments. Where cables pass through floor tiles, unsealed openings act as uncontrolled bypass paths — cold supply air escapes under equipment racks before it reaches the inlet, forcing the CRAC/CRAH units to work harder and raising PUE. The AR7730 Koldlok grommet closes that gap at the floor level, directing cold air where it belongs and blocking hot air recirculation from migrating downward into the plenum. This is a APC by Schneider Electric passive containment component — no power, no configuration, no compatibility restrictions beyond the raised-floor tile opening it covers.

Each AR7730 unit measures 27.9 cm across, sized to cover standard cable cutouts in raised-floor tiles. The package ships ten grommets per order, which is the right quantity to address a row segment or a single high-density rack zone in a single deployment pass.

Key Features

• Surface-Mount Design: Installs on top of the raised floor tile rather than requiring tile modification or underfloor access during installation — practical when tiles are loaded and repositioning them is disruptive. The mounting kit with pressure-sensitive foam included in the package means no tools or adhesives to source separately.
• Impact-Resistant Construction: Data center floors take foot traffic, equipment carts, and occasional dropped hardware. The impact-resistant material holds up to routine floor operations without cracking or deforming, which matters for a seal that relies on maintaining contact with the tile surface.
• Pressure-Sensitive Foam Seal: The included foam conforms to minor surface irregularities between the grommet body and the tile edge, closing air gaps that a rigid plastic-to-tile interface would leave open. In a properly pressurized plenum, even small leaks translate to measurable cold-air bypass.
• 10-Unit Pack: Buying in pack quantities reduces per-unit handling cost and ensures you have enough on hand to complete a row without a second order. A single rack with multiple cable bundles may need 2–3 grommets; ten units covers a typical 3–4 rack zone.
• TAA Compliance: The AR7730 meets Trade Agreements Act requirements, which matters for federal, state, and local government data center projects where product origin is a procurement gate. Confirm your project's TAA obligations before specifying non-compliant alternatives.
• No-Tool Foam Adhesion: Pressure-sensitive foam removes the need for liquid adhesives that cure time, off-gassing, and repositioning headaches. If cable routing changes — and in active data centers, it does — the grommet can be removed and reinstalled without damaging the tile surface.

Integration & Compatibility

The AR7730 is designed for raised floor cable management environments using standard perforated or solid raised-floor tiles. It is a passive accessory — it does not integrate with power distribution, monitoring, or management systems. Pair it with perforated blanking panels for rack-level containment and hot/cold aisle containment curtains or doors for row-level isolation. For facilities using APC's InfraStruXure or NetShelter product lines, the AR7730 fits naturally into the broader containment strategy without requiring any system-level coordination.

If your floor cutouts vary significantly in size or shape, verify the 27.9 cm grommet diameter against your actual tile cutout dimensions before ordering in quantity. Raised floor standards are not universal, and grommet fit depends on matching the cutout geometry.

What's in the Box

• 10x AR7730 Koldlok Surface Mount Raised Floor Grommets
• Mounting kit with pressure-sensitive foam
• Installation guide

Frequently Asked Questions

Q: How many grommets does the AR7730 package include?

A: The AR7730 ships as a 10-pack — ten individual Koldlok grommets per order, along with a mounting kit with pressure-sensitive foam and an installation guide.

Q: Is the AR7730 TAA compliant?

A: Yes. The AR7730 carries TAA (Trade Agreements Act) compliance, making it eligible for federal, state, and local government data center procurement where country-of-origin requirements apply.

Q: What size floor cutout does the AR7730 fit?

A: The AR7730 grommet measures 27.9 cm. Verify this dimension against your raised-floor tile cutout before ordering in large quantities, as raised-floor standards vary across manufacturers and facility generations.

Q: Does the AR7730 require tools or adhesives to install?

A: No. The mounting kit includes pressure-sensitive foam that adheres the grommet to the tile surface without liquid adhesives or special tools. This also allows removal and repositioning if cable routes change.

Q: Why do raised floor cable penetrations need to be sealed?

A: Unsealed floor cutouts allow pressurized cold air from the supply plenum to bypass equipment inlets and escape into the hot aisle or room — a direct hit to cooling efficiency and PUE. Sealing penetrations with grommets like the AR7730 forces cold air through the intended path: up through perforated tiles and into rack fronts.

Q: Can the AR7730 be reused if I reconfigure cable routing?

A: The pressure-sensitive foam mounting is designed to be removable without damaging the tile surface, which supports repositioning when cable infrastructure changes. Repeated removals may degrade the foam seal — inspect and replace foam as needed.

James Everett

The AR7730 is one of those components that looks trivial on a BOM but has an outsized effect on whether your containment strategy actually works. I've walked data center floors where every rack had blanking panels, hot-aisle containment, and properly sized CRAC units — but the cold aisle supply temp was still climbing because nobody sealed the cable cutouts. A 27.9 cm unsealed floor penetration under a 10kW rack is not a minor leak; it's a deliberate bypass in your airflow design.

Technical Highlights:

• 27.9 cm Surface-Mount Footprint: Covers the cable cutout without underfloor access — install from above, which means you can address penetrations without disrupting active floor tiles loaded with cable trays or conduit below.
• Pressure-Sensitive Foam Seal: Conforms to tile surface irregularities that a rigid grommet body cannot close. In a pressurized underfloor plenum, even a 2–3mm gap around a cable bundle becomes a measurable cold-air bypass path — the foam eliminates that without adhesives.
• TAA Compliance: Federal and SLED data center projects frequently require TAA-compliant infrastructure products at every BOM line. The AR7730 satisfies that gate without substitution or waiver paperwork.

Deployment Considerations:

• Order against your actual cable cutout count, not rack count — a single high-density rack with structured cabling, power, and fiber can easily consume 3 of the 10 grommets in one AR7730 pack. Survey cutouts before committing to quantity.
• The pressure-sensitive foam will lose adhesion if the tile surface is dusty, oily, or has residue from prior adhesive. Clean and dry the tile surface before installation or the seal will not perform as designed — this is the most common installation failure mode in practice.

The AR7730 is the right call for any raised-floor retrofit where airflow audit data shows cold-air bypass at the floor level and the cause traces to unsealed cable penetrations — most commonly in colocation environments that have been recabled multiple times without systematic grommet management.