U Channel Framing | McMaster-Carr

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10,000 psi to 30,000 psi

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52 Products

About Composites

Compare our offering of composites to find the right material for you.

Structural FRP Fiberglass U-Channels

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

Outside				Inside									5 ft. Long		10 ft. Long
Wd.	Wd. Tolerance	Ht.	Ht. Tolerance	Wd.	Ht.	Straightness Tolerance	Color	Temp. Range, ° F	Tensile Strength	Impact Strength	Hardness	For Use Outdoors		Each		Each







			1/8" Thick Wall (-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"/1 ft.	Green	-60 to 140	7,000 psi to 30,000 psi (Good)	4 ft·lbf/in to 25 ft·lbf/in (Excellent)	Barcol 45 (Hard)	Yes	0000000	000000	0000000	000000




					3/16" Thick Wall (-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"/1 ft.	Green	-60 to 140	7,000 psi to 30,000 psi (Good)	4 ft·lbf/in to 25 ft·lbf/in (Excellent)	Barcol 45 (Hard)	Yes	0000000	00000	0000000	000000




							1/4" Thick Wall (-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"/1 ft.	Green	-60 to 140	7,000 psi to 30,000 psi (Good)	4 ft·lbf/in to 25 ft·lbf/in (Excellent)	Barcol 45 (Hard)	Yes	0000000	00000	0000000	00000


							3"	-0.094" to 0.094"	1"	-0.094" to 0.094"	2 1/2"	3/4"	0.050"/1 ft.	Green	-60 to 140	7,000 psi to 30,000 psi (Good)	4 ft·lbf/in to 25 ft·lbf/in (Excellent)	Barcol 45 (Hard)	Yes	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"/1 ft.	Green	-60 to 140	7,000 psi to 30,000 psi (Good)	4 ft·lbf/in to 25 ft·lbf/in (Excellent)	Barcol 45 (Hard)	Yes	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"/1 ft.	Green	-60 to 140	7,000 psi to 30,000 psi (Good)	4 ft·lbf/in to 25 ft·lbf/in (Excellent)	Barcol 45 (Hard)	Yes	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"/1 ft.	Green	-60 to 140	7,000 psi to 30,000 psi (Good)	4 ft·lbf/in to 25 ft·lbf/in (Excellent)	Barcol 45 (Hard)	Yes	0000000	000000	0000000	000000

Arc-Resistant GPO3 Fiberglass U-Channels

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									3 ft. Long		5 ft. Long		6 ft. Long
	Wd.	Wd. Tolerance	Ht.	Ht. Tolerance	Wd.	Ht.	Straightness Tolerance	Color	Temp. Range, ° F	Tensile Strength	Impact Strength	Hardness	For Use Outdoors		Each		Each		Each
UL 94 V-0







				1/16" Thick Wall (-0.015" to 0.015")

				2 3/16"	-0.062" to 0.062"	3/4"	-0.062" to 0.062"	1 3/4"	11/16"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	00000000	000000	———	0




						1/8" Thick Wall (-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"	0.050"/1 ft.	Red	—	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Barcol 50 (Hard)	No	0000000	000000	———	0	0000000	000000




								1/8" Thick Wall (-0.02" to 0.02")

								2"	-0.062" to 0.062"	9/16"	-0.062" to 0.062"	1 3/4"	7/16"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	0000000	00000	———	0


								2"	-0.062" to 0.062"	13/16"	-0.062" to 0.062"	1 3/4"	11/16"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	00000000	00000	———	0
								2 5/16"	-0.062" to 0.062"	3/4"	-0.062" to 0.062"	2 1/16"	5/8"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	00000000	00000	———	0
								3 19/32"	-0.062" to 0.062"	1 1/8"	-0.062" to 0.062"	3 11/32"	1"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	00000000	00000	———	0
								4 1/2"	-0.062" to 0.062"	2 1/2"	-0.062" to 0.062"	4 1/4"	2 3/8"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	00000000	00000	———	0
								9 21/32"	-0.062" to 0.062"	1 5/8"	-0.062" to 0.062"	9 13/32"	1 1/2"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	00000000	000000	———	0




										5/32" Thick Wall (-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"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	0000000	00000	———	0




												3/16" Thick Wall (-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"	0.050"/1 ft.	Red	—	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Barcol 50 (Hard)	No	0000000	00000	———	0	0000000	00000


												4 3/4"	-0.063" to 0.063"	1 5/8"	-0.032" to 0.032"	4 3/8"	1 7/16"	0.050"/1 ft.	Red	—	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Barcol 50 (Hard)	No	0000000	00000	———	0	0000000	00000




														3/16" Thick Wall (-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"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	0000000	00000	———	0


														8 1/2"	-0.062" to 0.062"	2 11/16"	-0.062" to 0.062"	8 1/8"	2 1/2"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	0000000	000000	———	0




																1/4" Thick Wall (-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"	0.050"/1 ft.	Red	—	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Barcol 50 (Hard)	No	0000000	00000	———	0	0000000	000000




		1/4" Thick Wall (-0.02" to 0.02")

		2"	-0.062" to 0.062"													1"	-0.062" to 0.062"	1 1/2"	3/4"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	0000000	00000	———	0


		3"	-0.062" to 0.062"													7/8"	-0.062" to 0.062"	2 1/2"	5/8"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	0000000	00000	———	0
		3"	-0.062" to 0.062"													1 1/2"	-0.062" to 0.062"	2 1/2"	1 1/4"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	0000000	00000	———	0
		4"	-0.062" to 0.062"													1 1/8"	-0.062" to 0.062"	3 1/2"	7/8"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	0000000	000000	———	0
		4 1/2"	-0.062" to 0.062"	2 1/2"												-0.062" to 0.062"	4"	2 1/4"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	0000000	000000	———	0




				3/8" Thick Wall (-0.02" to 0.02")

				11 9/32"	-0.062" to 0.062"											1 5/8"	-0.032" to 0.032"	10 17/32"	1 1/4"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 ft·lbf/in to 12 ft·lbf/in (Excellent)	Rockwell M95 (Hard)	No	———	0	0000000	000000	———	0

High-Strength Lightweight Carbon Fiber U-Channels

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.

	Outside				Inside									36" Long		74" Long
	Wd.	Wd. Tolerance	Ht.	Ht. Tolerance	Wd.	Ht.	Color	Tensile Strength	Fiber Tensile Stiffness	Max. Temp., ° F	Impact Strength	Hardness	For Use Outdoors		Each		Each
Checked Glossy U-Channels







				0.05" Thick Wall (-0.06" to 0.06")

				2 1/8"	-0.125" to 0.125"	1"	-0.126" to 0.126"	2"	0.945"	Black	103,000 psi (Excellent)	33 msi to 36 msi (Standard)	275	Not Rated	Not Rated	No	00000000	0000000	00000000	0000000


				2 1/8"	-0.125" to 0.125"	1 1/4"	-0.128" to 0.128"	2"	1.195"	Black	103,000 psi (Excellent)	33 msi to 36 msi (Standard)	275	Not Rated	Not Rated	No	00000000	000000	00000000	000000
				2 1/8"	-0.125" to 0.125"	1 1/2"	-0.132" to 0.132"	2"	1.445"	Black	103,000 psi (Excellent)	33 msi to 36 msi (Standard)	275	Not Rated	Not Rated	No	00000000	000000	00000000	000000
				3 1/8"	-0.125" to 0.125"	1 1/2"	-0.132" to 0.132"	3"	1.445"	Black	103,000 psi (Excellent)	33 msi to 36 msi (Standard)	275	Not Rated	Not Rated	No	00000000	000000	00000000	000000
				3 1/8"	-0.125" to 0.125"	1 3/4"	-0.134" to 0.134"	3"	1.695"	Black	103,000 psi (Excellent)	33 msi to 36 msi (Standard)	275	Not Rated	Not Rated	No	00000000	000000	00000000	000000




						0.06" Thick Wall (-0.06" to 0.06")

						4 1/8"	-0.125" to 0.125"	2"	-0.136" to 0.136"	4"	1.935"	Black	103,000 psi (Excellent)	33 msi to 36 msi (Standard)	275	Not Rated	Not Rated	No	00000000	000000	00000000	000000


						4 1/8"	-0.125" to 0.125"	2 1/4"	-0.138" to 0.138"	4"	2.185"	Black	103,000 psi (Excellent)	33 msi to 36 msi (Standard)	275	Not Rated	Not Rated	No	00000000	000000	00000000	000000