FSR High-Load Capacity Floor Boxes

Heavy Duty Cable Connection and Cable Pass Through Floor Boxes for High Traffic Environments

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What's special about these high traffic floor boxes?

  • Innovative design combines elegance with a high-load capacity for use in carpeted or hard floor environments with heavy foot traffic, such as ballrooms, convention centers, museums or assembly halls
  • Supports multiple gang plate arrangements, to provide a wide range of customizable options and configurations of data, audio, video and/or power connections
  • Rugged construction and 7/8" thick heat-treated aluminum cover meet H20 load ratings, and are capable of supporting heavy equipment traffic, such as forklifts, automobiles and scissor lifts
  • Click for More Features

FSR High Load Capacity Floor Boxes combine elegance with rugged durably, to withstand up to 16,000 lbs of evenly distributed weight in heavily trafficked environments. The 7/8" solid aluminum covers are available with either a smooth surface for concrete or tiled flooring, or with a 0.20" recessed edge for carpeting. Back boxes feature innovative internal brackets that provide installer with numerous configurations for both high and low voltage applications. Two universal openings accept one or two electrical plates with a maximum total size of 4 gangs.


Please Note: These products ship in 2 weeks

For Carpet Covered Floor Applications
FSR-FLH20-1-BX High Load Capacity Floor Box with Configurable Internal Brackets 15" L x 13" W x 7.14" D
FSR-FLH20-1S-C Aluminum Cover with Locking Cable Exit Doors 15" L x 13" W x 0.875" D
FSR-FLH20-1-JBC Utility Cover for Junction Box Applications 15" L x 13" W x 0.875" D
For Bare Concrete Floor Applications
FSR-FLH20-0-BX High Load Capacity Floor Box with Configurable Internal Brackets 15" L x 13" W x 7.15" D
FSR-FLH20-0S-C Aluminum Cover with Locking Cable Exit Doors 15" L x 13" W x 0.875" D
FSR-FLH20-0-JBC Utility Cover for Junction Box Applications 15" L x 13" W x 0.875" D


For custom connectors please CLICK HERE

  • Equipped with multiple knockout provisions to supply convenient pass-throughs for conduit and bundled cables
  • Adjustable leveling feet for simple, fast and accurate installation before concrete is poured
  • Compartments can be electrically isolated, or wiring can be passed between compartments using the screwless separator system
  • Two cover styles available:
    • Utility cover provides no exit points for cables, ideal for junction box applications
    • Cable pass-through cover features two removable 3-position cam locks, which provide easy "one click" cable exiting
  • UL listed 514A
  • Floor Boxes meet the UL scrub-water testing standards
  • Made in the USA  Made in the USA


Edging Height: 0.20"
Colors: Silver
Knockouts Total of 12, either 1", 1.25" or 1.5" diameter
Accessory Plates included Two block-off plates
Four gang plate divider
Four center dividers
UL Listed 514A
Typical Applications Hotels
Convention Centers






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