Part Number:

46-40001     4” round Koldlok

46-40003     6” round Koldlok

The KoldLok® Round, from Upsite Technologies, is now available in two sizes 4″ and 6″.  Both versions of the KoldLok® Round raised floor grommet feature Hybrid Brush Technology (HBT), which combines KoldLok® brush technology with a membrane layer.  The result is a grommet that provides exceptional sealing and airflow management, unsurpassed by other brush products on the market.

The KoldLok® Round is easy to install and as it only requires hole saw installation, the labour time of installation can be reduced by over 50%.

The KoldLok® Round can be used to seal cable openings in new and existing raised floor cut outs. Sealing cable cut outs within the raised floor greatly reduces bypass airflow, increases the useable cooling unit capacity and ensures maximised efficiency from the CRAC unit.

  • Designed to seal openings in new and existing raised floor cutouts to block bypass airlow and maximise cooling system efficiency.
  • Both the 4” and 6” KoldLok® Round Grommet feature Hybrid Brush Technology (HBT), making them the premium choice for your facility.
  • Their revolutionary sealing technology greatly reduces costly bypass airflow, increasing usable cooling unit capacity, and ensuring maximised efficiency from HVAC equipment

The KoldLok® Round Grommet allows large cable bundles or PDU plugs to be pulled through the usable area.

  • The Split feature of the KoldLok® Round 4” and 6” allows product installation or removal without disturbing cables.
  • The Grommets contain no loose or partially fastened parts, which can become separated or fall through the raised floor.
  • The Grommets are impact resistant and durable.
  • The Grommets feature an extra sealing HBT Membrane Layer.
  • The Grommets satisfy NFPA 75 Section 5-4.4 requirement by self-dressing the raw metal edges of raised floor tile cable cutouts.
  • KoldLok® products are compliant with directive 2002/95/EC of the European Parliament and the Council on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electric Equipment (RoHS).
  • The Grommet features a membrane support structure.
  • The Grommet has a tapered joining structure.
  • Supports increasing cabinet density.
  • Increases existing cooling unit capacity.
  • Reduces the need to purchase additional cooling units.
  • Improves IT equipment reliability and extends equipment life.
  • Increases static pressure under the raised floor.
  • Improves volume of conditioned air delivery through perforated tiles and floor grates.
  • Compliance with best practices for all raised floor cooling configurations (Hot and Cold Aisle, Hot Aisle Containment, Cold Aisle Containment).
  • Simple, installation saves time and labour and requires no downtime.
  • Round grommets enable hole saw installation which reduces cutting time by over 50%.
  • Durable ABS frame and Hybrid Brush sealing surface can be used for years.
  • Hybrid Brush Technology (HBT)
4” Round (46-40001) Overall size (Diameter x Height)143 x 48mm5.61” x 1.9”
Product height above floor10mm0.4”
Maximum cutout size sealed102mm4.125”
Usable cable area244mm9.6 sq. inch
Hole cut diameter102mm4”
6” Round (46-40003) Overall size (Diameter x Height)192 x 48mm7.56” x 1.9”
Product height above floor10mm0.4”
Product height above floor10mm0.4”
Maximum cutout size sealed156mm6.125”
Usable cable area573mm22.55 sq. inch
Hole cut diameter152mm6”

Patented Sealing System Sealing Effectiveness

(U.S. Patent No. RE41863 and International Patents Pending) Multi-layer, opposing and interwoven filaments consisting of:

  •  0.010 inch diameter upper filament.
  • 0.020 inch diameter lower filament.
  • Approximately 25,000 filaments per Grommet.
  • Premium grade nylon Type 6 ensuring flexibility and self-sealing recovery.
  • Ensure passage of 100 amp power connectors.

Sealing Effectiveness

  • Effective bypass airflow sealing in areas undisturbed by cable penetrations at static pressures up to 0.10 inches of water column.
  • Effective bypass airflow sealing with four ½ inch cables penetrating the Grommet at a static pressure of 0.10 inches.

Grommet Frame

  • The frame is molded from durable polypropylene.
  • Finish: Black.

Floor Mounting System

Four (4) self-drilling screws are provided for installation.