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Shape Shape |
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![]() | Rectangular Tube |
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System of Measurement System of Measurement |
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Flexibility Flexibility |
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![]() | Rigid |
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Color Color |
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![]() | Red |
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Reinforcement Material Reinforcement Material |
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Compressive Strength Compressive Strength |
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Density Density |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Dielectric Strength Dielectric Strength |
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Flexural Strength Flexural Strength |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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About Composites
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Arc-Resistant GPO3 Fiberglass Square Tubes

- Color: Red
- Temperature Range: -50° F to 265° F
- Tensile Strength: 10,000-15,000 psi (Good)
- Impact Strength: 8.2-12 ft.-lbs./in. (Excellent)
- Hardness: Barcol 50 (Hard)
- For Use Outdoors: No
- Specifications Met: UL 94 V-0
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.
For technical drawings and 3-D models, click on a part number.
Outside | Inside | 3 ft. Lg. | 6 ft. Lg. | |||||||
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Width | Width Tolerance | Height | Height Tolerance | Width | Height | Straightness Tolerance | Each | Each | ||
1/8" Wall Thick. (-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" per ft. | 00000000 | 000000 | 00000000 | 000000 |
1/4" Wall Thick. (-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" per ft. | 00000000 | 000000 | 00000000 | 000000 |