Fiberglass U-Channels | McMaster-Carr

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	Material Material	Show

Fiberglass

	Material Material	Hide

	Shape Shape


U Channel	Hat Channel

	Grade Grade

FRP

GPO3

	System of Measurement System of Measurement

Inch

	Wall Thickness Wall Thickness

	Flexibility Flexibility

	Rigid

	Color Color

	Gray
	Red
	Green

	Performance Properties Performance Properties

	Length Length

	Inside Corner Shape Inside Corner Shape

Square

Round

	For Use Outdoors For Use Outdoors

Yes

	Outside Corner Shape Outside Corner Shape

Round

	Maximum Temperature Maximum Temperature

Less than 200° F

200° to 249° F

250° to 499° F

	Minimum Temperature Minimum Temperature

-49° to -25° F

Not Rated

	Leg Edge Shape Leg Edge Shape

Round

	Texture Texture

	Smooth

	Tensile Strength Rating Tensile Strength Rating

Good

	Water Absorption Rating Water Absorption Rating

Poor

	Tolerance Rating Tolerance Rating

Standard

	Impact Strength Rating Impact Strength Rating

Excellent

	Compressive Strength Compressive Strength

14,000-70,000 psi

32,000-42,000 psi

	Density Density

0.063 lbs./cu. in.

0.058-0.070 lbs./cu. in.

	Dielectric Strength Dielectric Strength

35-200 V/mil

200-600 V/mil

	Flexural Strength Flexural Strength

10,000-60,000 psi

23,200-31,000 psi

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78 Products

About Composites

Slotted Hole

Solid

Fiberglass channel is nonconductive with good resistance to chemicals and salt water. It's about half the weight of aluminum. Its thicker walls make it incompatible with strut channel components that require internal installation.

6'8" length channel is for use with beams spaced 6 ft. apart. The length allows 4" on each end to attach the channel to the beam.

For technical drawings and 3-D models, click on a part number.

Slotted Hole—1" Slot Lg. × 3/8" Slot Wd.

	Channel
Material	Ht.	Wd.	Thick.	Inside Channel Wd.		1 ft.	1 1/2 ft.	2 ft.	3 ft.	4 ft.	5 ft.	6 ft.	6'8"	8 ft.	10 ft.
Gray Fiberglass	1 5/8"	1 5/8"	0.16"	3/4"	0000000	000000	000000	000000	000000	000000	000000	000000	000000	000000	0000000

Solid

	Channel
Material	Ht.	Wd.	Thick.	Inside Channel Wd.		1 ft.	1 1/2 ft.	2 ft.	3 ft.	4 ft.	5 ft.	6 ft.	6'8"	8 ft.	10 ft.
Gray Fiberglass	1 5/8"	1 5/8"	0.16"	3/4"	0000000	00000	000000	000000	000000	000000	000000	000000	000000	000000	000000

Corner Strut Channel Brackets

Fiberglass brackets are nonconductive with good resistance to chemicals and salt water. They're about half the weight of aluminum.

For technical drawings and 3-D models, click on a part number.

90° Angle

	Lg.
Style	(A)	(B)	Thick.	Temperature Range, °F	Hole Dia.	Fasteners Included		Each
For 1 5/8" Channel Wd.
Gray Fiberglass
4	4"	4"	1/4"	-30° to 200°	7/16"	No	000000000	000000

45° Outside Angle

	Lg.
Style	(A)	(B)	Thick.	Temperature Range, °F	Hole Dia.	Fasteners Included		Each
For 1 5/8" Channel Wd.
Gray Fiberglass
17	2 5/16"	3"	1/4"	-30° to 200°	7/16"	No	000000000	000000

Surface Strut Channel Brackets

Fiberglass brackets are nonconductive with good resistance to chemicals and salt water. They're about half the weight of aluminum.

For technical drawings and 3-D models, click on a part number.

Straight

	Lg.
Style	(A)	(B)	Thick.	Hole Dia.	Fasteners Included		Each
For 1 5/8" Channel Wd.
Gray Fiberglass
2	4 7/8"	1 5/8"	3/8"	7/16"	No	000000000	00000
3	6 1/2"	1 5/8"	3/8"	7/16"	No	000000000	0000

Cross

	Lg.
Style	(A)	(B)	Thick.	Hole Dia.	Fasteners Included		Each
For 1 5/8" Channel Wd.
Gray Fiberglass
5	4 7/8"	4 7/8"	3/8"	7/16"	No	000000000	000000

Elbow

	Lg.
Style	(A)	(B)	Thick.	Hole Dia.	Fasteners Included		Each
For 1 5/8" Channel Wd.
Gray Fiberglass
6	3 1/4"	3 1/4"	3/8"	7/16"	No	000000000	000000
10	4 7/8"	4 7/8"	3/8"	7/16"	No	000000000	00000

Tee

	Lg.
Style	(A)	(B)	Thick.	Hole Dia.	Fasteners Included		Each
For 1 5/8" Channel Wd.
Gray Fiberglass
11	4 7/8"	3 1/4"	3/8"	7/16"	No	000000000	000000
13	4 7/8"	4 7/8"	3/8"	7/16"	No	000000000	00000

Any Angle

	Lg.
Style	(A)	(B)	Thick.	Hole Dia.	Fasteners Included		Each
For 1 5/8" Channel Wd.
Gray Fiberglass
14	5 1/4"	1 5/8"	3/8"	7/16"	No	000000000	00000

Structural FRP Fiberglass U-Channels

Color: Green
Max. Temperature: 140° F
Tensile Strength: 7,000-30,000 psi (Good)
Impact Strength: 4-25 ft.-lbs./in. (Excellent)
Hardness: Barcol 45 (Hard)
For Use Outdoors: Yes

Made of fiberglass-reinforced polyester, these FRP fiberglass U-channels are an alternative to wood in structural applications. They are strong and lightweight.

For technical drawings and 3-D models, click on a part number.

Outside				Inside
Wd.	Wd. Tolerance	Ht.	Ht. Tolerance	Wd.	Ht.	Straightness Tolerance		Each
5 ft. Lg.
1/8" Wall Thick. (-0.013" to 0.013")
2"	-0.094" to 0.094"	9/16"	-0.094" to 0.094"	1 3/4"	7/16"	0.050" per ft.	0000000	000000
3/16" Wall Thick. (-0.019" to 0.019")
3 1/2"	-0.094" to 0.094"	1 1/2"	-0.094" to 0.094"	3 1/8"	1 5/16"	0.050" per ft.	0000000	00000
1/4" Wall Thick. (-0.025" to 0.025")
3"	-0.094" to 0.094"	7/8"	-0.094" to 0.094"	2 1/2"	5/8"	0.050" per ft.	0000000	00000
3"	-0.094" to 0.094"	1"	-0.094" to 0.094"	2 1/2"	3/4"	0.050" per ft.	0000000	00000
4"	-0.094" to 0.094"	1 1/8"	-0.094" to 0.094"	3 1/2"	7/8"	0.050" per ft.	0000000	00000
6"	-0.094" to 0.094"	1 5/8"	-0.094" to 0.094"	5 1/2"	1 3/8"	0.050" per ft.	0000000	00000
8"	-0.094" to 0.094"	2 3/16"	-0.094" to 0.094"	7 1/2"	1 15/16"	0.050" per ft.	0000000	00000
10 ft. Lg.
1/8" Wall Thick. (-0.013" to 0.013")
2"	-0.094" to 0.094"	9/16"	-0.094" to 0.094"	1 3/4"	7/16"	0.050" per ft.	0000000	00000
3/16" Wall Thick. (-0.019" to 0.019")
3 1/2"	-0.094" to 0.094"	1 1/2"	-0.094" to 0.094"	3 1/8"	1 5/16"	0.050" per ft.	0000000	00000
1/4" Wall Thick. (-0.025" to 0.025")
3"	-0.094" to 0.094"	7/8"	-0.094" to 0.094"	2 1/2"	5/8"	0.050" per ft.	0000000	00000
3"	-0.094" to 0.094"	1"	-0.094" to 0.094"	2 1/2"	3/4"	0.050" per ft.	0000000	00000
4"	-0.094" to 0.094"	1 1/8"	-0.094" to 0.094"	3 1/2"	7/8"	0.050" per ft.	0000000	00000
6"	-0.094" to 0.094"	1 5/8"	-0.094" to 0.094"	5 1/2"	1 3/8"	0.050" per ft.	0000000	000000
8"	-0.094" to 0.094"	2 3/16"	-0.094" to 0.094"	7 1/2"	1 15/16"	0.050" per ft.	0000000	000000

Arc-Resistant GPO3 Fiberglass U-Channels

Color: Red
Max. Temperature: 265° F
Tensile Strength: 10,000-15,000 psi (Good)
Impact Strength: 8.2-12 ft.-lbs./in. (Excellent)
Hardness: See table
For Use Outdoors: No
Specifications Met: UL 94 V-0

These GPO3 fiberglass U-channels are often used for electrical applications in humid environments. They are arc and track resistant, plus they have better electrical insulation properties than FRP fiberglass. Made of fiberglass-reinforced polyester, they're also called polyester-grade industrial laminate.

Outside				Inside
Wd.	Wd. Tolerance	Ht.	Ht. Tolerance	Wd.	Ht.	Hardness	Straightness Tolerance		Each
3 ft. Lg.
1/16" Wall Thick. (-0.015" to 0.015")
2 3/16"	-0.062" to 0.062"	3/4"	-0.062" to 0.062"	2 1/16"	11/16"	Rockwell M95 (Hard)	0.050" per ft.	00000000	000000
1/8" Wall Thick. (-0.025" to 0.025")
2 9/16"	-0.063" to 0.063"	1 7/32"	-0.032" to 0.032"	2 5/16"	1 3/32"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
1/8" Wall Thick. (-0.02" to 0.02")
2"	-0.062" to 0.062"	9/16"	-0.062" to 0.062"	1 3/4"	7/16"	Rockwell M95 (Hard)	0.050" per ft.	00000000	0000
2"	-0.062" to 0.062"	13/16"	-0.062" to 0.062"	1 3/4"	11/16"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
2 5/16"	-0.062" to 0.062"	3/4"	-0.062" to 0.062"	2 1/16"	5/8"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
3 19/32"	-0.062" to 0.062"	1 1/8"	-0.062" to 0.062"	3 11/32"	1"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
4 1/2"	-0.062" to 0.062"	2 1/2"	-0.062" to 0.062"	4 1/4"	2 3/8"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
9 21/32"	-0.062" to 0.062"	1 5/8"	-0.062" to 0.062"	9 13/32"	1 1/2"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
5/32" Wall Thick. (-0.02" to 0.02")
5 1/2"	-0.062" to 0.062"	1 1/4"	-0.062" to 0.062"	5 3/16"	1 3/32"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
11 1/2"	-0.062" to 0.062"	1 7/16"	-0.062" to 0.062"	11 3/16"	1 9/32"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
3/16" Wall Thick. (-0.025" to 0.025")
3 9/16"	-0.063" to 0.063"	2 9/16"	-0.032" to 0.032"	3 3/16"	2 3/8"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
4"	-0.625" to 0.625"	1 3/8"	-0.032" to 0.032"	3 5/8"	1 3/16"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
4 3/4"	-0.063" to 0.063"	1 5/8"	-0.032" to 0.032"	4 3/8"	1 7/16"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
3/16" Wall Thick. (-0.02" to 0.02")
4"	-0.062" to 0.062"	1 3/8"	-0.062" to 0.062"	3 5/8"	1 3/16"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
8 1/2"	-0.062" to 0.062"	2 11/16"	-0.062" to 0.062"	8 1/8"	2 1/2"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
1/4" Wall Thick. (-0.025" to 0.025")
6 1/2"	-0.040" to 0.040"	2 3/4"	-0.020" to 0.020"	6"	2 1/2"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
1/4" Wall Thick. (-0.02" to 0.02")
2"	-0.062" to 0.062"	1"	-0.062" to 0.062"	1 1/2"	3/4"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
3"	-0.062" to 0.062"	7/8"	-0.062" to 0.062"	2 1/2"	5/8"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
3"	-0.062" to 0.062"	1 1/2"	-0.062" to 0.062"	2 1/2"	1 1/4"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
4"	-0.062" to 0.062"	1 1/8"	-0.062" to 0.062"	3 1/2"	7/8"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
4 1/2"	-0.062" to 0.062"	2 1/2"	-0.062" to 0.062"	4"	2 1/4"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
9/32" Wall Thick. (-0.025" to 0.025")
4 9/16"	-0.062" to 0.062"	2 9/16"	-0.062" to 0.062"	4"	2 9/32"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
3/8" Wall Thick. (-0.025" to 0.025")
11 9/32"	-0.062" to 0.062"	1 5/8"	-0.062" to 0.062"	10 17/32"	1 1/4"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
6 ft. Lg.
1/16" Wall Thick. (-0.015" to 0.015")
2 3/16"	-0.062" to 0.062"	3/4"	-0.062" to 0.062"	2 1/16"	11/16"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
1/8" Wall Thick. (-0.025" to 0.025")
2 9/16"	-0.063" to 0.063"	1 7/32"	-0.032" to 0.032"	2 5/16"	1 3/32"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
1/8" Wall Thick. (-0.02" to 0.02")
2"	-0.062" to 0.062"	9/16"	-0.062" to 0.062"	1 3/4"	7/16"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
2"	-0.062" to 0.062"	13/16"	-0.062" to 0.062"	1 3/4"	11/16"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
2 5/16"	-0.062" to 0.062"	3/4"	-0.062" to 0.062"	2 1/16"	5/8"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
3 19/32"	-0.062" to 0.062"	1 1/8"	-0.062" to 0.062"	3 11/32"	1"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
4 1/2"	-0.062" to 0.062"	2 1/2"	-0.062" to 0.062"	4 1/4"	2 3/8"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
9 21/32"	-0.062" to 0.062"	1 5/8"	-0.062" to 0.062"	9 13/32"	1 1/2"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
5/32" Wall Thick. (-0.02" to 0.02")
5 1/2"	-0.062" to 0.062"	1 1/4"	-0.062" to 0.062"	5 3/16"	1 3/32"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
11 1/2"	-0.062" to 0.062"	1 7/16"	-0.062" to 0.062"	11 3/16"	1 9/32"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
3/16" Wall Thick. (-0.025" to 0.025")
3 9/16"	-0.063" to 0.063"	2 9/16"	-0.032" to 0.032"	3 3/16"	2 3/8"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
4"	-0.625" to 0.625"	1 3/8"	-0.032" to 0.032"	3 5/8"	1 3/16"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
4 3/4"	-0.063" to 0.063"	1 5/8"	-0.032" to 0.032"	4 3/8"	1 7/16"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
3/16" Wall Thick. (-0.02" to 0.02")
4"	-0.062" to 0.062"	1 3/8"	-0.062" to 0.062"	3 5/8"	1 3/16"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
8 1/2"	-0.062" to 0.062"	2 11/16"	-0.062" to 0.062"	8 1/8"	2 1/2"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
1/4" Wall Thick. (-0.025" to 0.025")
6 1/2"	-0.040" to 0.040"	2 3/4"	-0.020" to 0.020"	6"	2 1/2"	Barcol 50 (Hard)	0.050" per ft.	0000000	00000
1/4" Wall Thick. (-0.02" to 0.02")
2"	-0.062" to 0.062"	1"	-0.062" to 0.062"	1 1/2"	3/4"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
3"	-0.062" to 0.062"	7/8"	-0.062" to 0.062"	2 1/2"	5/8"	Rockwell M95 (Hard)	0.050" per ft.	0000000	00000
3"	-0.062" to 0.062"	1 1/2"	-0.062" to 0.062"	2 1/2"	1 1/4"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
4"	-0.062" to 0.062"	1 1/8"	-0.062" to 0.062"	3 1/2"	7/8"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
4 1/2"	-0.062" to 0.062"	2 1/2"	-0.062" to 0.062"	4"	2 1/4"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
9/32" Wall Thick. (-0.025" to 0.025")
4 9/16"	-0.062" to 0.062"	2 9/16"	-0.062" to 0.062"	4"	2 9/32"	Rockwell M95 (Hard)	0.050" per ft.	00000000	00000
3/8" Wall Thick. (-0.025" to 0.025")
11 9/32"	-0.062" to 0.062"	1 5/8"	-0.062" to 0.062"	10 17/32"	1 1/4"	Rockwell M95 (Hard)	0.050" per ft.	0000000	000000

Arc-Resistant GPO3 Fiberglass Hat Channels

Color: Red
Max. Temperature: 265° F
Tensile Strength: 10,000-15,000 psi (Good)
Impact Strength: 8.2-12 ft.-lbs./in. (Excellent)
Hardness Rating: Barcol 50 (Hard)
For Use Outdoors: No
Specifications Met: UL 94V0

Unlike similar U-channels, these GPO3 fiberglass hat channels have flanges for mounting to flat surfaces. Use them to route and insulate wire in humid environments. All of these hat channels are arc and track resistant. They also have better electrical insulation properties than FRP fiberglass. Made of fiberglass-reinforced polyester, they're often called polyester-grade industrial laminate.

For technical drawings and 3-D models, click on a part number.

Outside				Inside
Width	Width Tolerance	Height	Height Tolerance	Width	Height	Straightness Tolerance		Each
3 ft. Lg.
1/8" Wall Thick. (-0.02" to 0.02")
4 19/32"	-0.062" to 0.062"	7/8"	-0.062" to 0.062"	4 11/32"	3/4"	0.050" per ft.	00000000	000000
5"	-0.062" to 0.062"	1 3/8"	-0.062" to 0.062"	4 3/4"	1 1/4"	0.050" per ft.	00000000	00000
3/16" Wall Thick. (-0.02" to 0.02")
9 9/16"	-0.062" to 0.062"	2 3/8"	-0.062" to 0.062"	9 5/16"	2 1/4"	0.050" per ft.	00000000	00000
6 ft. Lg.
1/8" Wall Thick. (-0.02" to 0.02")
4 19/32"	-0.062" to 0.062"	7/8"	-0.062" to 0.062"	4 11/32"	3/4"	0.050" per ft.	00000000	00000
5"	-0.062" to 0.062"	1 3/8"	-0.062" to 0.062"	4 3/4"	1 1/4"	0.050" per ft.	00000000	00000
3/16" Wall Thick. (-0.02" to 0.02")
9 9/16"	-0.062" to 0.062"	2 3/8"	-0.062" to 0.062"	9 5/16"	2 1/4"	0.050" per ft.	00000000	00000

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