Electrical-Grade Fiberglass (GPO3) Square Stock

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Material

Fiberglass

Material Grade

GPO3 Fiberglass

System of Measurement

Thickness

Width

Length

Shape

Color

Performance

Highly Electrically Insulating

Ultra Impact Resistant

Flexibility

Maximum Temperature

Backing Type

Texture

Hardness Rating

Outside Width

Clarity

Wall Thickness

Resin Material

For Use Outdoors

Hardness

Barcol 50

Tensile Strength Rating

Good

RoHS

Compliant

Tensile Strength

10,000 psi to 15,000 psi

REACH

Compliant

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

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91 Products

About Composites

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

Arc-Resistant GPO3 Fiberglass Sheets and Strips

Often used for electrical applications in humid environments, these GPO3 fiberglass sheets and strips are arc and track resistant. They offer better electrical insulation properties than FRP fiberglass. Made of fiberglass-reinforced polyester, they're also called polyester-grade industrial laminate.

Sheets

	Thk.	Thk. Tolerance	Flatness Tolerance	Color	Max. Temp., ° F	Tensile Strength	Impact Strength, ft·lbf/in	Hardness	For Use Outdoors	Flammability Rating		Each
12" Wide × 12" Long



		1/32"	-0.008" to 0.008"	0.600"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	—	0000000	00000


		1/16"	-0.008" to 0.008"	0.300"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	0000
		3/32"	-0.009" to 0.009"	0.300"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
		1/8"	-0.01" to 0.01"	0.120"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
		3/16"	-0.013" to 0.013"	0.120"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
		1/4"	-0.015" to 0.015"	0.120"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
		3/8"	-0.02" to 0.02"	0.060"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
		1/2"	-0.024" to 0.024"	0.060"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
		3/4"	-0.029" to 0.029"	0.060"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
		1"	-0.033" to 0.033"	0.03"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


		12" Wide × 24" Long



				1/32"	-0.008" to 0.008"	1.200"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	—	0000000	00000


				1/16"	-0.008" to 0.008"	0.600"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
				3/32"	-0.009" to 0.009"	0.600"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
				1/8"	-0.01" to 0.01"	0.240"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
				3/16"	-0.013" to 0.013"	0.240"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
				1/4"	-0.015" to 0.015"	0.240"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
				3/8"	-0.02" to 0.02"	0.120"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
				1/2"	-0.024" to 0.024"	0.120"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
				3/4"	-0.029" to 0.029"	0.120"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
				1"	-0.033" to 0.033"	0.060"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000


				24" Wide × 24" Long



						1/32"	-0.008" to 0.008"	1.200"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	—	0000000	00000


						1/16"	-0.008" to 0.008"	0.600"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
						3/32"	-0.009" to 0.009"	0.600"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
						1/8"	-0.01" to 0.01"	0.240"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
						3/16"	-0.013" to 0.013"	0.240"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
						1/4"	-0.015" to 0.015"	0.240"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
						3/8"	-0.02" to 0.02"	0.120"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
						1/2"	-0.024" to 0.024"	0.120"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
						3/4"	-0.029" to 0.029"	0.120"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
						1"	-0.033" to 0.033"	0.060"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000


						24" Wide × 36" Long



								1/32"	-0.008" to 0.008"	1.800"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	—	0000000	00000


								1/16"	-0.008" to 0.008"	0.900"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
								3/32"	-0.009" to 0.009"	0.900"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
								1/8"	-0.01" to 0.01"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
								3/16"	-0.013" to 0.013"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
1/4"								-0.015" to 0.015"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
3/8"	-0.02" to 0.02"							0.180"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
1/2"	-0.024" to 0.024"							0.180"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
3/4"	-0.029" to 0.029"							0.180"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
1"	-0.033" to 0.033"							0.090"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000


36" Wide × 72" Long



								1/32"	-0.008" to 0.008"	3.600"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	—	0000000	000000


								1/16"	-0.008" to 0.008"	1.800"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
								3/32"	-0.009" to 0.009"	1.800"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
								1/8"	-0.01" to 0.01"	0.720"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
								3/16"	-0.013" to 0.013"	0.720"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
								1/4"	-0.015" to 0.015"	0.720"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
		3/8"						-0.02" to 0.02"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
		1/2"	-0.024" to 0.024"					0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
		3/4"	-0.029" to 0.029"					0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
		1"	-0.033" to 0.033"					0.180"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000


		48" Wide × 96" Long



								1/16"	-0.008" to 0.008"	2.400"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000


								3/32"	-0.009" to 0.009"	2.400"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
								1/8"	-0.01" to 0.01"	0.960"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
								3/16"	-0.013" to 0.013"	0.960"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
								1/4"	-0.015" to 0.015"	0.960"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
								3/8"	-0.02" to 0.02"	0.480"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
								1/2"	-0.024" to 0.024"	0.480"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
				3/4"				-0.029" to 0.029"	0.480"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	00000000
				1"	-0.033" to 0.033"			0.240"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	00000000

Strips

	Thk. Tolerance	Flatness Tolerance	Color	Max. Temp., ° F	Tensile Strength	Impact Strength, ft·lbf/in	Hardness	For Use Outdoors	Flammability Rating		Each
3" Wide × 36" Long



	1/8"	-0.01" to 0.01"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000


	1/4"	-0.015" to 0.015"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
	3/8"	-0.02" to 0.02"	0.180"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
	1/2"	-0.024" to 0.024"	0.180"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
	1"	-0.033" to 0.033"	0.090"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


	3" Wide × 72" Long



			1/8"	-0.01" to 0.01"	0.720"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


			1/4"	-0.015" to 0.015"	0.720"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
			3/8"	-0.02" to 0.02"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
			1/2"	-0.024" to 0.024"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
			1"	-0.033" to 0.033"	0.180"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


			6" Wide × 36" Long



					1/8"	-0.01" to 0.01"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


					1/4"	-0.015" to 0.015"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
					3/8"	-0.02" to 0.02"	0.180"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
					1/2"	-0.024" to 0.024"	0.180"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
					1"	-0.033" to 0.033"	0.090"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


					6" Wide × 72" Long



							1/8"	-0.01" to 0.01"	0.720"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


							1/4"	-0.015" to 0.015"	0.720"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
							3/8"	-0.02" to 0.02"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
							1/2"	-0.024" to 0.024"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
							1"	-0.033" to 0.033"	0.180"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000


							12" Wide × 36" Long



									1/8"	-0.01" to 0.01"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


									1/4"	-0.015" to 0.015"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
									3/8"	-0.02" to 0.02"	0.180"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
									1/2"	-0.024" to 0.024"	0.180"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
									1"	-0.033" to 0.033"	0.090"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000


12" Wide × 72" Long



									1/8"	-0.01" to 0.01"	0.720"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


									1/4"	-0.015" to 0.015"	0.720"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
									3/8"	-0.02" to 0.02"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
									1/2"	-0.024" to 0.024"	0.360"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
									1"	-0.033" to 0.033"	0.180"	Red	265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000

Arc-Resistant GPO3 Fiberglass Square Tubes

Route and insulate wire using these square fiberglass tubes, which fit better along edges and around corners than round tubes. Use them for electrical applications in humid locations. They’re arc and track resistant, and better electrical insulators than FRP fiberglass. Made of fiberglass-reinforced polyester, they’re also known as polyester-grade industrial laminate.

	Outside				Inside									5 ft. Long
	Wd.	Wd. Tolerance	Ht.	Ht. Tolerance	Wd.	Ht.	Straightness Tolerance	Color	Temp. Range, ° F	Tensile Strength	Impact Strength, ft·lbf/in	Hardness	For Use Outdoors		Each
UL 94 V-0







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

				1 1/2"	-0.062" to 0.062"	1 1/2"	-0.062" to 0.062"	1 1/4"	1 1/4"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	00000000	000000




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

						2"	-0.062" to 0.062"	2"	-0.062" to 0.062"	1 1/2"	1 1/2"	0.050"/1 ft.	Red	-50 to 265	10,000 psi to 15,000 psi (Good)	8.2 to 12	Barcol 50 (Hard)	No	00000000	000000