1000355441 Catalog
2016-09-04
: Pdf 1000355441-Catalog 1000355441-Catalog B4 unilog
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Page Count: 8
Effective September, 2005
Copyright 2005
PAGE 2
800-621-1506
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Applications
• Meet a wide range of classified area
requirements.
•
Corrosion-resistant–ideal indoors or
out.
• For pulling of wires.
• Connect conduit lengths and change
direction of conduit.
• Provide access for maintenance.
Features: All Bodies and Boxes
• Malleable iron bodies have high
tensile strength and ductility. Provides
great resistance to corrosion, impact,
and shock.
• Accurately tapped, tapered hub
threads for tight, rigid joints and ground
continuity.
• Furnished with covers.
• General purpose wiring.
Features: GR and GRF
➊GR offers ten hub arrangements.
➋GRF has integral mounting flange.
• Function as sealing fittings when
used with sealing covers (see NEC for
restrictions).
• Internally threaded body with
externally threaded cover.
• Covers have pry notches for bar or
wrench.
• Accommodate sealing, dome, hub
and union hub covers, and canopies.
• Standard O-rings provide raintight fit.
NEMA 3,4.
• Internal ground screw standard.
• Smooth, rounded integral bushing in
each hub type box protects conductor
insulation.
Features: GRH
➌Designed for use in Class I, Groups
A, B, C, and D; Class II, Groups E, F,
and G; and Class III.
• Internally threaded body with
externally threaded covers.
• Standard O-rings provide raintight fit.
NEMA 3,4.
• Internal ground screw standard.
• Smooth, rounded integral bushing in
each hub type box protects conductor
insulation.
Features: ELBD
➍Exclusive built-in pulling rollers in
each end (2-1/2 thru 4” sizes) protect
cable from damage and make cable
pulling easier.
Conduit Outlet Boxes and Bodies:
Malleable Iron or Aluminum;
Explosionproof, Dust-Ignitionproof
UNILETS® for use with Threaded Metal Conduit.
GU
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GRSS
Effective September, 2005
Copyright 2005
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Conduit Outlet Boxes and Bodies:
Malleable Iron or Aluminum;
Explosionproof, Dust-Ignitionproof
UNILETS® for use with Threaded Metal Conduit.
• Excellent for use in wiring of motors,
panelboards, circuit breakers, entranc-
es to buildings, etc.
• Body and cover have ground mating
surfaces to meet classified-location
requirements.
• Smooth, rounded integral bushing in
each hub type box protects conductor
insulation.
Features: ELBY
• Serve as pulling fittings.
• Make 90° bends in conduit.
•
Threaded cover opening permits
easy access for pulling conductors thru
hubs
.
• Easily removable threaded cover.
Features: CPU
Universal design with four threaded
universal hubs and three close-up
plugs.
• Serve as mounting outlets for lighting
fixtures when used with hub cover.
• Wide, accurately ground explosion-
proof mating surfaces.
• Smooth, rounded integral bushing in
each hub type box protects conductor
insulation.
Features: GRU and GRUE
Universal design with five threaded
universal hubs and three close-up
plugs.
• Copper-free aluminum body and
cover provide resistance to corrosive
atmospheres.
• Function as sealing fittings when
used with sealing covers (see NEC for
restrictions).
• GRU has internally threaded body
and externally threaded cover with O-
ring for raintight fit, NEMA 3,4. GRUE
has externally threaded body and
internally threaded overlapping cover.
• Covers have pry notches for bar or
wrench.
• Smooth, rounded integral bushing in
each hub type box protects conductor
insulation.
Features: GRJS
Universal design with five threaded
openings and three close-up plugs.
• Compact round box for use where
space is limited.
• Serve as mounting means for lighting
fixtures when used with hub cover.
• Function as sealing fittings when
used with sealing covers (see NEC for
restrictions).
• Internally threaded body with
externally threaded cover.
• Smooth, rounded integral bushing in
each hub type box protects conductor
insulation.
Features: GRJ
Small, round conduit outlet boxes.
• Function as sealing fittings when
used with sealing covers (see NEC for
restrictions).
• Externally threaded body with inter-
nally threaded cover.
• Smooth, rounded integral bushing in
each hub type box protects conductor
insulation.
Features: ER
Compact, rectangular conduit outlet
boxes are ideal in classified locations
where space is limited.
• Six different hub arrangements.
•
Ground surface contact between
body and cover assures a flame-tight
joint.
• Smooth, rounded integral bushing in
each hub type box protects conductor
insulation.
Features: GRUO and GRUJ
• Threaded universal hubs for wiring
flexibility.
GRUO has eight hubs.
GRUJ offers up to eleven hubs.
• Ideally suited for use where space is
limited, such as for gasoline pumps.
• Function as sealing fittings when
used with sealing cover (see NEC for
restrictions).
• Externally threaded body with inter-
nally threaded covers.
• Smooth, rounded integral bushing in
each hub type box protects conductor
insulation.
Features: GRU (Union Hubs)
Union hubs permit easy wiring.
• Function as sealing fittings when
used with sealing covers (see NEC for
restrictions).
• Externally threaded body with inter-
nally threaded cover.
• Smooth, rounded integral bushing in
each hub type box protects conductor
insulation.
Features: GRSS and GRSSA
• Multiple hubs permit flexibility.
• Copper-free aluminum body and
cover provide superior corrosion
resistance.
• Internal ground screw standard.
Features: GU
• Designed for Class I, Groups B,C,D;
Class II, Groups E,F,G; and Class III.
• Externally threaded body with
internally threaded cover.
• Smooth, rounded integral bushing in
each hub type box protects conductor
insulation.
• Internal ground screw standard.
Standard Materials
• GR, GRF, GRH, and GRJS:
Malleable iron bodies with aluminum
covers.
• Aluminum GR Series: Copper-free
body and cover.
• GU, GRUO, GRUJ, GRU (Union),
GRJ, CPU, ER, ELBD and ELBY:
Malleable iron bodies and covers.
• GRU, GRUE, and GRSS: Aluminum
copper-free bodies and covers.
• GRG O-Rings: Neoprene.
Standard Finishes
• Malleable iron bodies and
covers (except ELBY) triple-coat—(1)
zinc electroplate, (2) dichromate, and
(3) epoxy powder coat.
• Aluminum bodies and covers: epoxy
powder coat.
• ELBY malleable iron body and cover:
zinc electroplate and clear chromate.
Compliances
• UL Standard 886.
• Federal Spec. W-C-586B.
• Appleton malleable iron products
conform to ASTM A47-77, Grade
32510, which has the following proper-
ties: tensile strength, 50,000 psi; yield,
32,000 psi; and elongation, 10%.
• Appleton aluminum products are
produced from a high strength copper-
free (4/10 of 1% max.) alloy.
• Suitable for Class I, Div. 1 & 2, if
installed in compliance with NEC 501-
4(a)(b) and for Class II, Div. 1 & 2, if
in compliance with NEC 502-4(a)(b).
• GR Series: CSA -LR25875-30.
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Effective August, 2008
Copyright 2008
PAGE 4
Conduit Cover
Hub Size Opening Cubic Form Catalog Number*
Type (Inches) (Inches) Inches No.† Malleable Iron• Aluminum•
1/2 3.38 18 1 GRE50 GRE50-A
3/4 3.38 18 1 GRE75 GRE75-A
GRE 1 3.38 18 1 GRE100 GRE100-A
1-1/4 3.94 31 2 GRE125 GRE125-A
1-1/2 4.88 72 3 GRE150 GRE150-A
1/2 3.38 18 1 GRC50 GRC50-A
3/4 3.38 18 1 GRC75 GRC75-A
GRC 1 3.38 18 1 GRC100 GRC100-A
1-1/4 3.94 31 2 GRC125 GRC125-A
1-1/2 4.88 72 3 GRC150 GRC150-A
2 4.88 76 3 GRC200 GRC200-A
1/2 3.38 18 1 GRL50 GRL50-A
3/4 3.38 18 1 GRL75 GRL75-A
GRL 1 3.38 18 1 GRL100 GRL100-A
1-1/4 3.94 31 2 GRL125 GRL125-A
1-1/2 4.88 72 3 GRL150 GRL150-A
2 4.88 76 3 GRL200 GRL200-A
1/2 3.38 18 1 GRLB50 GRLB50-A
3/4 3.38 18 1 GRLB75 GRLB75-A
GRLB 1 3.38 18 1 GRLB100 GRLB100-A
1-1/4 3.94 31 2 GRLB125 GRLB125-A
1-1/2 4.88 72 3 GRLB150 GRLB150-A
2 4.88 76 3 GRLB200 GRLB200-A
1/2 3.38 18 1 GRN50 GRN50-A
3/4 3.38 18 1 GRN75 GRN75-A
GRN 1 3.38 18 1 GRN100 GRN100-A
1-1/4 3.94 31 2 GRN125 GRN125-A
1-1/2 4.88 72 3 GRN150 GRN150-A
1/2 3.38 18 1 GRT50 GRT50-A
3/4 3.38 18 1 GRT75 GRT75-A
GRT 1 3.38 18 1 GRT100 GRT100-A
1-1/4 3.94 31 2 GRT125 GRT125-A
1-1/2 4.88 72 3 GRT150 GRT150-A
2 4.88 76 3 GRT200 GRT200-A
1/2 3.38 18 1 GRX50 GRX50-A
3/4 3.38 18 1 GRX75 GRX75-A
GRX 1 3.38 18 1 GRX100 GRX100-A
1-1/4 3.94 31 2 GRX125 GRX125-A
1-1/2 4.88 72 3 GRX150 GRX150-A
2 4.88 76 3 GRX200 GRX200-A
* In Class I, Div. 1, Group B atmospheres, all conduit runs must have a sealing fitting (not supplied) field installed adjacent to the enclosure.
• Supplied with Aluminum covers.
† Form number designates body and matching cover sizes. To order body without cover, add suffix -LC to catalog number.
Other covers available—see GR Cover listing page and order separately.
See J-8 for optional Terminal Blocks.
GR Conduit Outlet Boxes:
Explosionproof, Dust-Ignitionproof
UNILETS® for use with Threaded Metal Conduit.
Furnished with Internal Ground Screw and O-Ring.
Class I, Div. 1 and 2
Groups B*,C,D
Class II, Div. 1 and 2
Groups E,F,G
Class III
NEMA 3,4
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Effective August, 2008
Copyright 2008
Conduit Cover
Hub Size Opening Form Catalog Number*
Type (Inches) (Inches) No.† Malleable Iron Aluminum
GRCA 1/2 3.38 1 GRCA50 GRCA50-A
3/4 3.38 1 GRCA75 GRCA75-A
GRLA 1/2 3.38 1 GRLA50 GRLA50-A
3/4 3.38 1 GRLA75 GRLA75-A
GRTA 1/2 3.38 1 GRTA50 GRTA50-A
3/4 3.38 1 GRTA75 GRTA75-A
* In Class I, Div. 1, Group B atmospheres, all conduit runs must have a sealing fitting (not supplied) field installed adjacent to the enclosure.
• Supplied with Aluminum covers.
† Form number designates body and matching cover sizes. To order body without cover, add suffix -LC to catalog number.
Other covers available—see GR Cover listing page and order separately.
See J-8 for optional Terminal Blocks.
GR Conduit Outlet Boxes:
Explosionproof, Dust-Ignitionproof
UNILETS® for use with Threaded Metal Conduit.
Furnished with Internal Ground Screw and O-Ring.
GR Series, Form 1
Dimensions in Inches
Hub Size (In.) A B C D E F G
1/2 3.75 2.44 2.88 .75 .81 2.25 1.25
3/4 3.75 2.44 2.88 .75 .81 2.25 1.25
1 3.75 2.44 2.88 .94 .94 2.25 1.06
Dimensions in Centimeters
1/2 9.5 6.2 7.3 1.9 2.1 5.7 3.2
3/4 9.5 6.2 7.3 1.9 2.1 5.7 3.2
1 9.5 6.2 7.3 2.4 2.4 5.7 2.7
GR Series, Forms 2 and 3
Dimensions in Inches
Hub Size (In.) A B C D E F G
1-1/4 4.50 2.69 3.56 1.19 .88 2.75 1.13
1-1/2 5.75 3.75 4.81 1.38 .94 4.06 1.50
2 5.75 4.00 5.06 1.63 1.00 4.25 1.25
Dimensions in Centimeters
1-1/4 11.4 6.8 9.1 3.0 2.2 7.0 2.9
1-1/2 14.6 9.5 12.2 3.5 2.4 10.3 3.8
2 14.6 10.2 12.9 4.1 2.5 10.8 3.2
For cubic inches information, see page J-19
Class I, Div. 1 and 2
Groups B*,C,D
Class II, Div. 1 and 2
Groups E,F,G
Class III
NEMA 3,4
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Effective August, 2008
Copyright 2008
PAGE 6
Conduit Cover
Hub Size Opening Form Catalog Number*
Type (Inches) (Inches) No.† Malleable Iron Aluminum
GRFC 1/2 3.38 1 GRFC50 GRFC50-A
3/4 3.38 1 GRFC75 GRFC75-A
1 3.38 1 GRFC100 GRFC100-A
GRFL 1/2 3.38 1 GRFL50 GRFL50-A
3/4 3.38 1 GRFL75 GRFL75-A
1 3.38 1 GRFL100 GRFL100-A
GRFT 1/2 3.38 1 GRFT50 GRFT50-A
3/4 3.38 1 GRFT75 GRFT75-A
1 3.38 1 GRFT100 GRFT100-A
GRFX 1/2 3.38 1 GRFX50 GRFX50-A
3/4 3.38 1 GRFX75 GRFX75-A
1 3.38 1 GRFX100 GRFX100-A
* In Class I, Div. 1, Group B atmospheres, all conduit runs must have a sealing fitting (not supplied) field installed adjacent to the enclosure.
† Form number designates body and matching cover sizes. To order body without cover, add suffix -LC to catalog number.
Other covers available—see GR Cover listing page and order separately.
GRF Flanged Conduit Outlet Boxes:
Explosionproof, Dust-Ignitionproof
UNILETS® for use with Threaded Metal Conduit.
Furnished with Internal Ground Screw and O-Ring.
Class I, Div. 1 and 2
Groups B*,C,D
Class II, Div. 1 and 2
Groups E,F,G
Class III
NEMA 3,4
For cubic inches information, see page J-19
Effective September, 2005
Copyright 2005
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PAGE 7
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Hub Conduit Cover Catalog Number
Type Size (Inches) Opening (Inches) Malleable Iron
GRHC 1/2 3.38 GRHC50
3/4 3.38 GRHC75
1 3.38 GRHC100
GRHL 1/2 3.38 GRHL50
3/4 3.38 GRHL75
1 3.38 GRHL100
GRHLB 1/2 3.38 GRHLB50
3/4 3.38 GRHLB75
1 3.38 GRHLB100
GRHT 1/2 3.38 GRHT50
3/4 3.38 GRHT75
1 3.38 GRHT100
GRHX 1/2 3.38 GRHX50
3/4 3.38 GRHX75
1 3.38 GRHX100
GRH Conduit Outlet Boxes:
Explosionproof, Dust-Ignitionproof
UNILETS® for use with Threaded Metal Conduit.
Furnished with Internal Ground Screw and O-Ring.
GRH Series
Dimensions in Inches
Hub Size (In.) A B C D E F G
1/2 3.75 2.44 2.63 .75 .81 1.63 1.25
3/4 3.75 2.44 2.63 .75 .81 1.63 1.25
1 3.75 2.44 2.63 .94 .94 1.63 1.06
Dimensions in Centimeters
1/2 9.5 6.2 6.7 1.9 2.1 4.1 3.2
3/4 9.5 6.2 6.7 1.9 2.1 4.1 3.2
1 9.5 6.2 6.7 2.4 2.4 4.1 2.7
Class I, Div. 1 and 2
Groups A,B,C,D
Class II, Div. 1 and 2
Groups E,F,G
Class III
NEMA 3,4
For cubic inches information, see page J-19
Effective September, 2005
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Cover Fixture
Hub Opening Stem Size Form Catalog Number
Type (Inches) (Inches) No.† Malleable Iron Aluminum
Surface 3.38 1 GRK-1M GRK-1
3.94 2 GRK-2M GRK-2
4.88 3 GRK-3M GRK-3
Sealing 3.38 1 GRK-1SC GRK-1SC-A
3.94 2 GRK-2SC GRK-2SC-A
4.88 3 GRK-3SC GRK-3SC-A
Dome 3.38 1 GRK-1DC
2” deep
Union Hub 3.38 3/4 1 GRK-75U GRK-75UA
Hub 3.38 1/2 1 GRK-50 GRK50-A
3.38 3/4 1 GRK-75 GRK75-A
Canopy 3.38 1/2 1 GRK-50C
Length 3.38 3/4 1 GRK-75C
4-1/2” 3.38 1 1 GRK-100C
O-Rings—Buna-N Catalog Number
Provide Raintight fit when used on 1 GRG-1
following series: GR (Forms 1, 2 and 3), 2 GRG-2
GRF (Form 1), GRH, and GRU (Form 1). 3 GRG-3
GRTB Terminal Strip
For use in standard GR series boxes Weidmuller type MK terminal Block*
with wire range of #22-#12 AWG. Mounts on 2 predrilled and tapped standard
holes (furnished in internal GR boxes).
6 position terminal block kit 1+2 GRTB6-12
6 position terminal block kit 3 GRTB6-3
12 position terminal block kit 3 GRTB12-3
*Terminal block is UL listed for 300 volts, 25 ampere. CSA certified for 300 volts, 13 ampere.
†Form numbers designate cover and matching body sizes.
Covers for GR and GRF Conduit Outlet Boxes
Covers and O-rings Fit Bodies with Corresponding
Form Numbers.
Effective September, 2005
Copyright 2005
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Volume in Cubic Inches and Cubic Centimeters
Wiring Capacity
Type Size Vol./cu. in. Vol./cu. cm
CPU Form 20 21.0 344.1
ER 1/2” 4.8 78.7
ER 3/4” 7.3 119.3
GR Form 1 18.0 295.0
GR Form 2 31.0 508.0
GR Form 3 (1-1/2”) 72.0 1179.9
Form 3 (2”) 76.0 1245.4
GRF All 18.0 295.0
GRH All 13.8 226.2
GRJ All 7.3 119.3
GRJS All 12.5 204.8
GRK (Canopy)- -50C, -75C, -100C 16.0 262.2
GRK (Dome) 1DC 6.0 98.3
GRU (Union Hubs) 1/2”, 3/4” 19.0 311.4
GRU (Universal) 1/2”, 3/4” 13.5 221.2
1” 17.5 286.8
GRUE 1/2”, 3/4” 15.3 250.7
1” 18.5 303.2
GRUJ All 25.0 409.7
GRUO All 25.0 409.7
GRSS All 29.0 475.2
GRSSA All 29.0 475.2
GU All 19.0 311.4
ELBD 90° Pulling Unilets
Size 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4
Capacity in Cubic Inches
ELBD 7.0 7.0 25.0 25.0 69.0 69.0 240.0 240.0 540.0 540.0
Capacity in Cubic Centimeters
ELBD 114.7 114.7 409.7 409.7 1130.7 1130.7 3932.9 3932.9 8849.0 8849.0
Wiring Capacity:
Explosionproof Conduit Outlet Boxes
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GU ELBD
GRSS
