U Channel Framing | McMaster-Carr

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	Shape Shape	Show

U Channel

	Shape Shape	Hide

	System of Measurement System of Measurement

Inch

	Outside Width Outside Width

	Inside Width Inside Width

	Length Length

	Outside Height Outside Height

	Material Material

Carbon Fiber

Fiberglass

FRP Fiberglass

	Wall Thickness Wall Thickness

	Color Color

	Black
	Green
	Red

	Performance Properties Performance Properties

	Inside Height Inside Height

	For Use Outdoors For Use Outdoors

Yes

	Flexibility Flexibility

	Rigid

	Maximum Temperature Maximum Temperature

Less than 200° F

250° to 299° F

	Inside Corner Shape Inside Corner Shape

Round

Square

	Hardness Rating Hardness Rating

Hard

Not Rated

	Leg Edge Shape Leg Edge Shape

Round

Square

	Outside Corner Shape Outside Corner Shape

Round

	Texture Texture

	Smooth

	Dielectric Strength Dielectric Strength

35-200 V/mil

200-600 V/mil

Not Rated

	Flexural Strength Flexural Strength

10,000-30,000 psi

23,200-31,000 psi

121,000 psi

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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68 Products

About Composites

Color: Green
Temperature Range: -60° F to 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			5 ft. Lg.		10 ft. Lg.
Wd.	Wd. Tolerance	Ht.	Ht. Tolerance	Wd.	Ht.	Straightness Tolerance		Each		Each
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	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	0000000	000000
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	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	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	0000000	000000
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	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	0000000	000000

Arc-Resistant GPO3 Fiberglass U-Channels

Color: Red
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.

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

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	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.	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
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 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	000000
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	000000
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
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	000000
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	000000
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	000000
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 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	000000
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	000000
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	000000
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	000000
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	000000
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

Ultra-Strength Lightweight Carbon Fiber U-Channels

Color: Black
Tensile Strength: 103,000 psi (Excellent)
Fiber Tensile Stiffness: Standard (33-36 msi)
Maximum Temperature: 275° F
Impact Strength: Not Rated
Hardness: Not Rated
For Use Outdoors: No

Often used to make railings, edge covers, and other structural framing parts, these carbon fiber U-channels add stiffness and strength to applications without adding a lot of weight. They’re similar in strength to 6061 aluminum yet lighter in weight. With a plain weave and 0°/90° construction layup, all are easy to machine. They won’t splinter when cut.

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

Outside				Inside		36" Lg.		74" Lg.
Width	Width Tolerance	Height	Height Tolerance	Width	Height		Each		Each
Checked Glossy U-Channels
0.05" Wall Thickness (-0.06" to 0.06")
2 1/8"	-0.125" to 0.125"	1"	-0.126" to 0.126"	2"	0.945"	00000000	0000000	00000000	0000000
2 1/8"	-0.125" to 0.125"	1 1/4"	-0.128" to 0.128"	2"	1.195"	00000000	000000	00000000	000000
2 1/8"	-0.125" to 0.125"	1 1/2"	-0.132" to 0.132"	2"	1.445"	00000000	000000	00000000	000000
3 1/8"	-0.125" to 0.125"	1 1/2"	-0.132" to 0.132"	3"	1.445"	00000000	000000	00000000	000000
3 1/8"	-0.125" to 0.125"	1 3/4"	-0.134" to 0.134"	3"	1.695"	00000000	000000	00000000	000000
0.06" Wall Thickness (-0.06" to 0.06")
4 1/8"	-0.125" to 0.125"	2"	-0.136" to 0.136"	4"	1.935"	00000000	000000	00000000	000000
4 1/8"	-0.125" to 0.125"	2 1/4"	-0.138" to 0.138"	4"	2.185"	00000000	000000	00000000	000000

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About Composites

Structural FRP Fiberglass U-Channels

Arc-Resistant GPO3 Fiberglass U-Channels

Ultra-Strength Lightweight Carbon Fiber U-Channels