HomeFire ProtectionFire Stop Devices Flame Stopper

Wiremold FlameStopper Thru-Wall and Thru-Floor Fittings

3 to 4 Hour Fire Rating Between Walls

WM-FS2R-RED
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What's special about this cable fire stop?

  • Designed to stop the spread of fire between rooms, walls or floors for both new and retrofit constructions
  • Engineered to expand quickly when exposed to fire or high heat, to create a fast and efficiently seal around the cables and prevent the movement of flames and smoke
  • Plenum rated; tested to UL2043 and suitable for air-handling spaces like A/C vents
  • Click for More Features
UL

With a passive fire rating of up to four hours between walls and three hours between floors, the Wiremold FlameStopper is a perfect complement to any existing sprinkler system. Designed to provide an excellent barrier for new or existing construction, it's great for owners, tenants and inspection authorities alike.

PART # DESCRIPTION COLOR WEIGHT PRICE
WM-SPMGL FlameStopper, Ground Lug, 5 pack N/A 0.06 lb
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FlameStopper Trade EMT Conduit Fitting
WM-FS2R-RED 2" Trade EMT Conduit Fitting, for transitioning cables through the fire rated walls/floors for both new and retrofit Red Finish 3 lbs
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WM-FS4R-RED 4" Trade EMT Conduit Fitting, for transitioning cables through the fire rated walls/floors for both new and retrofit Red Finish 6 lbs
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WM-FS2R-GA 2" Trade EMT Conduit Fitting, for transitioning cables through the fire rated walls/floors for both new and retrofit Galvanized Finish 3 lbs
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WM-FS4R-GA 4" Trade EMT Conduit Fitting, for transitioning cables through the fire rated walls/floors for both new and retrofit Galvanized Finish 6 lbs
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FlameStopper Precut to 7-5/8" Conduit
WM-FSPCC2758 2" Diameter, Trade Size EMT, fits 6" wall thickness with a 2-hour fire rating Galvanized Finish 1 lb
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WM-FSPCC4758 4" Diameter, Trade Size EMT, fits 6" wall thickness with a 2-hour fire rating Galvanized Finish 2.4 lbs
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FlameStopper Retrofit Kit
WM-FS2RWP8 Kit includes; 2" diameter split conduit to enclose existing cables and 8x8 wall plate, for use with WM-FS2R series firestop Galvanized Finish 6.2 lbs
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WM-FS4RWP12 Kit includes; 4" diameter split conduit to enclose existing cables and 12x12 wall plate, for use with WM-FS4R series firestop Galvanized Finish 12.8 lbs
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  • Mechanical doors can be closed to provide a barrier between rooms prior to cabling installation
  • Adding or subtracting cables is easy: just adjust the doors to accommodate more or fewer cables - no need to adjust the intumescent material
  • Fittings are shipped in pairs, and installed on both sides of the wall or floor to accommodate any thickness
  • 4-hour fire and temperature rating ensures that the FlameStopper will maintain the integrity of fire rated walls or floors
  • Retrofit kits available; no need to plug existing construction with caulks, sealants or putties
  • Kits consist of:
    • Split conduit for installations where no conduit is installed
    • Large firestop wall plate for irregular hole penetrations
    • Heat shield for existing extended conduit lengths
  • ASTM E814, UL1479, UL2043

 

Flame: The F Rating (F and FH in Canada) is expressed in hours. This number indicates the specific length of time that a barrier can
withstand fire before being consumed or before permitting the passage of flame through the opening.
Temperature: The T Rating (FT and FTH in Canada) is expressed in hours. This number indicates the length of time that the temperature on the non-fire side of the penetration does not exceed 325 degrees F above the ambient temperature.
Air Leakage: The L Rating is expressed in CFM. This number indicates the amount of air (or cold smoke) that can leak through a penetration.
THROUGH-WALL RATINGS FOR FS2R & FS4R SERIES (When used alone for new construction or existing construction with heat shield.)
UL RATINGS (US Ratings) MAX. RATING UL RATINGS (Canadian Ratings) MAX. RATING
F Rating w/ & w/o cables 4 Hours F & FH Rating w/ & w/o cables 4 Hours
T Rating w/coax cable 4 Hours FT & FTH Rating w/coax cable 4 Hours
T Rating w/fiber optic cable 4 Hours FT & FTH Rating w/fiber optic cable 4 Hours
T Rating w/Max. 1" fiber optic rcwy. w/fiber optic fill 4 Hours FT & FTH Rating w/Max. 1" fiber optic rcwy. w/fiber optic fill 4 Hours
T Rating w/Max. 4-pair cable (22 ga & smaller) 3 Hours FT & FTH Rating w/Max. 4-pair cable (22 ga & smaller) 3 Hours
T Rating w/Max. 4 conductor (2AWG & smaller) 1 Hours FT & FTH Rating w/Max. 4 conductor (2AWG & smaller) 1 Hours
T Rating w/Max. 100-pair cable (24 ga & smaller) 1 Hours FT & FTH Rating w/Max. 100-pair cable (24 ga & smaller) 1 Hours
T Rating w/Max. 400-pair cable (24 ga & smaller) 45 Minutes FT & FTH Rating w/Max. 400-pair cable (24 ga & smaller) 45 Minutes
T Rating w/MC cable (8 wire max. 12 ga & smaller) 15 Minutes FT & FTH Rating w/MC cable (8 wire max. 12 ga & smaller) 15 Minutes
L Rating at ambient w/o cables (doors closed) 2.6 cfm L Rating at ambient w/o cables (doors closed) 2.6 cfm
L Rating at 400°F w/o cables (doors closed) 1.9 cfm L Rating at 400°F w/o cables (doors closed) 1.9 cfm
L Rating at ambient with cables 2.8 cfm L Rating at ambient with cables 2.8 cfm
L Rating at 400°F with cables 1.3 cfm L Rating at 400°F with cables 1.3 cfm
Suitable for use in air handling spaces (plenums) Yes Suitable for use in air handling spaces (plenums) Yes
THROUGH-WALL RATINGS FOR FS2R & FS4R SERIES (When used with wall plate for retrofit applications.)
UL RATINGS (US Ratings) MAX. RATING UL RATINGS (US Ratings) MAX. RATING
F Rating w/ & w/o cables 2 Hours F & FH Rating w/ & w/o cables 2 Hours
T Rating w/Max. 4-pair cable (22 ga & smaller) 1.25 Hours FT & FTH Rating w/Max. 4-pair cable (22 ga & smaller) 1.25 Hours
T Rating w/coax cable 1 Hour  FT & FTH Rating w/coax cable 1 Hour 
T Rating w/fiber optic cable 1.25 Hours FT & FTH Rating w/fiber optic cable 1.25 Hours
T Rating w/Max. 1" fiber optic rcwy. w/fiber optic fill 1.25 Hours FT & FTH Rating w/Max. 1" fiber optic rcwy. w/fiber optic fill 1.25 Hours
T Rating w/MC cable (8 wire max. 12 ga & smaller) 15 Minutes FT & FTH Rating w/MC cable (8 wire max. 12 ga & smaller) 15 Minutes
L Rating at ambient w/o cables (doors closed) 1.7 cfm L Rating at ambient w/o cables (doors closed) 1.7 cfm
L Rating at 400°F w/o cables (doors closed) 1.8 cfm L Rating at 400°F w/o cables (doors closed) 1.8 cfm
L Rating at ambient with cables 3.3 cfm L Rating at ambient with cables 3.3 cfm
L Rating at 400°F with cables 2.0 cfm L Rating at 400°F with cables 2.0 cfm
Suitable for use in air handling spaces (plenums) Yes Suitable for use in air handling spaces (plenums) Yes

 

THROUGH-FLOOR RATINGS FOR FS2R & FS4R SERIES (When used alone.)
UL RATINGS (US Ratings) MAX. RATING UL RATINGS (Canadian Ratings) MAX. RATING
F Rating w/ & w/o cables 3 Hours F Rating w/ & w/o cables 3 Hours
T Rating w/o cables 3 Hours T Rating w/o cables 3 Hours
T Rating w/coax cable 3 Hours T Rating w/coax cable 3 Hours
T Rating w/fiber optic cable 3 Hours T Rating w/fiber optic cable 3 Hours
T Rating w/Max. 4-pair cables (22 ga. or smaller) 3 Hours T Rating w/Max. 4-pair cables (22 ga. or smaller) 3 Hours
T Rating w/Max. 4-conductor (2 ga. or smaller) 45 Minutes T Rating w/Max. 4-conductor (2 ga. or smaller) 45 Minutes
T Rating w/Max. 100-pair cables (24 ga. or smaller) 1 Hour T Rating w/Max. 100-pair cables (24 ga. or smaller) 1 Hour
T Rating w/Max. 400-pair cables (24 ga. or smaller) 45 Minutes T Rating w/Max. 400-pair cables (24 ga. or smaller) 45 Minutes
T Rating w/MC cable (8 wire Max. 12 ga. or smaller) 15 Minutes T Rating w/MC cable (8 wire Max. 12 ga. or smaller) 15 Minutes
L Rating at ambient w/o cables (doors closed) 2.6 cfm L Rating at ambient w/o cables (doors closed) 2.6 cfm
L Rating at 400°F w/o cables (doors closed) 1.9 cfm L Rating at 400°F w/o cables (doors closed) 1.9 cfm
L Rating at ambient with cables 2.8 cfm L Rating at ambient with cables 2.8 cfm
L Rating at 400°F with cables 1.3 cfm L Rating at 400°F with cables 1.3 cfm
Suitable for use in air handling spaces (plenums) Yes Suitable for use in air handling spaces (plenums) Yes
NOTE: Minimum 4 1/2" [114mm] thick reinforced lightweight or normal weight (100-150 pcf) [1600-2400 kg/m3] concrete floor. Maximum diameter of opening is 4 1/2" [114mm].

 

Wire Fill Capacity Charts for FlameStopper

Data/Communication Wire
  Cable/Wire Size O.D. FS2 (Fill) FS4 (Fill)
inches (mm) 40% 60% 40% 60%
Unshielded Twisted Pair 4-pair, 24 AWG Cat 3 UTP 0.19 [4.8] 47 71 208 312
4-pair, 24 AWG Cat. 5e UTP 0.21 [5.3] 38 58 170 255
4-pair, 24 AWG Cat. 6 UTP 0.25 [6.3] 20 30 68 100
Telephone 2-pair, 24 AWG 0.14 [3.6] 87 130 383 574
25-pair, 24 AWG 0.41 [10.4] 10 15 44 67
50-pair, 24 AWG 0.58 [14.7] 5 7 22 33
100-pair, 24 AWG 0.7 [17.8] 3 5 15 22
400-pair, 24 AWG 1.47 [37.3] 0 1 3 5
Coaxial RG58/U 0.195 [5.0] 45 67 197 296
RG59/U 0.242 [6.1] 29 43 128 192
RG62/U 0.242 [6.1] 29 43 128 192
RG6/U 0.27 [6.9] 21 32 95 140
Fiber Optic 2 Count 0.18 [4.6] 52 79 231 347
6 Count 0.21 [5.3] 38 58 170 255
24 Count 0.4 [10.2] 10 16 46 70
48 Count 0.45 [11.4] 8 12 37 55
96 Count 0.56 [14.2] 5 8 23 35
 
Power Wiring
Cable Type O.D. FS2 (Fill) FS4 (Fill)
inches (mm) 40% 60% 40% 60%
Max 4 cond. No. 2 AWG (or smaller) copper conductor cable with XLPE/PVX insulation and PVC jacket 0.375 [9.5] 12 18 53 80
0.500 [12.7] 6 10 30 45
0.625 [15.9] 4 6 19 28
0.750 [19.1] 3 4 13 20
0.875 [22.2] 2 3 9 14
1.000 [25.4] 1 2 7 11
1.125 [28.6] 1 2 5 8
Max 8 cond. No.12 AWG MC (Metal Clad) Cable 0.375 [9.5] 12 18 53 80
0.500 [12.7] 6 10 30 45
0.625 [15.9] 4 6 19 28
0.655 [16.6] 3 5 17 26

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Questions & Answers

Question:

I am going to purchase 4- FS4R. Do I purchase the 4" EMT from you or my own electrical supply store?

Asked by Anonymous user on 04/26/2017 12:57 PM

Answer:

  • - Hello, The FS4R doesn't come with conduit. You can purchase it through us or you can purchase the kit, which is on the same page further down, part number WM-FS4RWP12. This kit includes; Split conduit for installations where no conduit is installed Large firestop wall plate for irregular hole penetrations And Large firestop wall plate for irregular hole penetrations IF you have any other questions please give us a call toll free at 866-222-0030

    andrew b. on 04/26/2017 5:50 PM

  • - Hello, The FS4R doesn't come with conduit. You can purchase it through us or you can purchase the kit, which is on the same page further down, part number WM-FS4RWP12. This kit includes; Split conduit for installations where no conduit is installed Large firestop wall plate for irregular hole penetrations And Large firestop wall plate for irregular hole penetrations IF you have any other questions please give us a call toll free at 866-222-0030

    andrew b. on 04/26/2017 2:38 PM

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