PlenaFill 27 U Blanking Panels

According to industry standards best practices, installing blanking (filler) panels is the simplest and most effective means to control air flow in a data center or containment system. Panels cover unused rack space in unoccupied server and equipment racks and stop hot aisle air from coming into the front of the rack and mixing with the cold aisle air. Stopping hot air from recirculating back to the front of the rack reduces the overall air intake temperatures, which also helps prolong equipment life. Large sections of unused rack space can be blanked out in seconds.

Installing PlenaFill blanking panels is a simple solution that can be implemented in any data center at a very low cost. Power consumption is increasingly important to IT managers because they want to use their budgets most effectively, and electricity is a large portion of the overall budget. PlenaFill 23″ and 19″ blanking panels can also be installed together in network equipment racks that have 23″ to 19″ reducing brackets.


  • Scalable panels significantly reduce time and labor cost associated with installation.
  • No need to use separate filler panels for each rack manufacturer; works well in a multi-vendor environment.
  • Rack units not lining up? PlenaFill can be cut to fill spaces less than 1 U and fits behind face plates.
  • U’s are perforated for easy separation.
  • Servers operate at cooler temperatures by filling large sections of unoccupied rack space to control air flow.
  • No panel assembly, cage nuts or grommets required.
  • Thin, flexible and particulate free.
  • Stops server exhaust air recirculation — Operating costs are lowered.
  • Fits snugly against EIA rails.
  • Lightweight material = less freight cost.
  • Stores flat = less storage space needed.
  • Non-Conductive, non-hygroscopic, inert.
  • UL94 V-0 electrical insulating material.



Physical PropertiesTest MethodFormex GK-40
Density – gm/ccASTM D-7921.035
Oxygen IndexASTM D-286329
Water AbsorptionASTM D-5700.06%
Heat Deflection Temperature at 66 psiASTM D-648121° C/250° F
Relative Thermal IndexUL 746B 
Electrical 115° C/239° F
Mechanical Without Impact 115° C/239° F
Surface Energy – dynes/cm (as produced)ASTM D-2578≥ 50
Electrical PropertiesTest MethodFormex GK-40
Dielectric Breakdown – voltsASTM D-14937,800
Dielectric Strength – volts/milASTM D-149945
Volume Resistivity – ohm – cmASTM D-2573.97 x 1015
Dielectric ConstantASTM D-1502.3
Dissipation FactorASTM D-1500.0019
High Current Arc Ignition – arcs to igniteUL 746A200+
High Voltage Arc Tracking – in/minUL 746A0.0
Hot Wire Ignition – secondsUL 746A12
Comparative Tracking Index – voltsASTM D-3638600+

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U.S. Patent No’s 7782625, 7944699, 8526187, 8282451 and Other Foreign Patents Pending  © 2020 CompuSpace LC.
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