Koldlok 20100 Split Integral Wave Grommet

Please note, the Upsite KoldLok 20100 is discontinued. For replacement options, please contact your Server Racks Online sales representative at 1-866-722-5776.

Designed to seal openings in new raised floor cutouts prior to the installation of communications, power, or other cabling. In a study done by Upsite Technologies on 19 computer rooms totaling over 204,400 ft , it was found that 60% of valuable cooled air is not reaching the air intakes of IT equipment.

The KoldLok Wave was developed to provide the best seal against this wasted airflow.

Note: These KoldLok Grommets are sold as a pack of 10.

KoldLok 20100 - Click to enlarge

Dimensions11"Wx8 7/8"Dx1 7/8"H


  • Sealing Effectiveness - New, patent-pending wave shaped thermoplastic elastomer offers the best sealing against bypass airflow, unsurpassed by any brush grommet on the market.
  • Usable Cable Area - O ers 45.5 sq inches of usable cable area, over two and a half times that of a leading brush competitor.
  • Maintenance Free - Wave shaped material seals around cables with no additional maintenance or monitoring required.
  • Configuration - Split design allows edge cut tiles to be removed without capturing cables. Fire Resistant - Thermoplastic elastomer material is rated UL94 HB.
  • Longevity - Durable, impact-resistant ABS frame.
  • Safety Cover - An optional cover is available to ensure greater safety before rack and cable installation.


  • Increases cooling unit efectiveness
  • Allows for greater IT density in data centers Increases static pressure under the raised floor
  • Improves cool air delivery through perforated tiles and floor grates
  • Decreases humidity control expense
  • Meets a prerequisite for hot aisle/cold aisle best practices and containment strategies
  • Reduces the need to buy additional cooling units

Patent Pending Sealing System

Utility and design patents registered and pending for both the U.S. and worldwide. The KoldLok Wave™ design uses thermoplastic elastomer to wrap around penetrants, creating a more effective seal.

Floor Mounting System

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

Grommet Frame

The frame is molded from durable ABS.
Finish: Black

Thermoplastic Elastomer (TPE)

TPE material is overmolded to frame to create a flexible sealing membrane with a tear strength of 100lbf/in (ASTM D624).

Dimensions and Tile Cutting Requirements
Overall size11" x 9" x 1 7/8" (279 x 229 x 48mm)
Product height above the raised floor3/8" (10mm)
Usable cable area7" x 5 7/8" 9197 x 149mm)
Minimum cut required to install Grommet in interior of the tile9 1/4" x 6 3/4" (235mm x 172mm)