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880MPFC Series Fire Classified Nonmetallic Rectangular Floor Box

880MPFC Wiremold
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Legrand® takes Resource RFB® Series Floor Boxes to the next level with the introduction of four recessed style floor box models that meet or exceed UL Fire Classification requirements. Available in 2-gang and 4-gang versions. These floor boxes preserve the two-hour and three-hour fire rating of floors in which they have been installed and are a favored industry solution for getting power, communication, and audio video services into open spaces. These new boxes also accept existing cover plate and service fitting offerings. When properly installed, Fire Classified Floor Boxes save time and money for general contractors and installers by eliminating the need for spraying to fireproof floors. They also eliminate the guesswork for inspectors and provide reassurance for building owners and property managers by meeting or exceeding the UL Fire Classification Standards for Floor Boxes.
Application Sector Commercial


  • Fire Classified Nonmetallic Rectangular Floor Box. Box comes complete with reusable mudcap, insert spacer, conduit plugs and reducers. Reducers provided for reduction to 1'', 3/4'', and 1/2'' (25mm, 19.1mm, and 12.7mm) conduit. Minimum concrete depth is 3 1/2'' (89mm) and maximum concrete depth is 6'' (152mm). Minimum capacity is 50 cu. in. (819ml) and maximum capacity is 100 cu. in. (1639ml). Box dimensions are 4 1/8'' W x 5 1/2'' L x 6'' (105mm x 140mm x 152mm). NOTE: Insert spacer should not be removed until after concrete pour. This is a single-gang offering. Cannot gang boxes together and maintain Fire Classification. Floor box spacing 2' on center, no more than 1 per 65 s.f. span. Maximum Copper Cross Section per Insert: Four (4) #12 AWG Type THHN Power Conductor or 48 #23 AWG (6 Cat. 6) Tele Data conductors. Box preserves the 2-hour fire rating of the floor in which it has been installed.


General Info
Product Line Wiremold
UPC Number 786564072119
Country Of Origin United States
Construction Assembled
Number of Knockouts 2
Application Sector Commercial
Standard cULus Listed Metallic Outlet Boxes: File E2961 Guide QCIT, Meets Article 314.27(C) of NEC.
Type Floor Box
Cubic Capacity 50 cu in
Additional Information
RoHS Conformant Yes This product meets the material restrictions of Article 4 of the RoHS Directive (2011/65/EU), including Commission Delegated Directive 2015/863.
Listing Agencies / 3rd Party Agencies
cULus ListingNumber  E110748
cULus Listed  Yes
Technical Information
Cable Entry conduit in



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