Fiberglass Square Tubing

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	Material Material

Fiberglass

Garolite

Plastic

	Reinforcement Material Reinforcement Material

Fabric

Paper

	System of Measurement System of Measurement

Inch

Metric

	Outside Width Outside Width

	Shape Shape

	Rectangular Tube

	Outside Height Outside Height

	Wall Thickness Wall Thickness

	Inside Width Inside Width

	Length Length

	Inside Height Inside Height

	Flexibility Flexibility

	Rigid

	Performance Properties Performance Properties

	For Use Outdoors For Use Outdoors

Yes

	Electrical Insulation Rating Electrical Insulation Rating

Excellent

Good

Poor

	Hardness Rating Hardness Rating

Hard

Extra Hard

	Clarity Clarity

Opaque

	Grade Grade

	Tensile Strength Tensile Strength

	Maximum Temperature Maximum Temperature

Less than 200° F

200° to 249° F

250° to 299° F

	Texture Texture

	Smooth

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Impact Strength Rating Impact Strength Rating

Poor

Excellent

Not Rated

	Color Color

	Gray		Black
	Green		Red
	Tan		Brown

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55 Products

About Composites

Roller Mounting Bracket for Round Axles

Add rollers to T-slotted framing to create flow rails, ball transfer tables, and other manual conveyors.

Use roller mounts in pairs to support conveyor rollers in T-slotted framing.

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

For Rail Ht.			For Axle
Single	Double and Quad	Triple	Shape	Dia.	Lg.	Color	Material	Mounting Fasteners Included		Each
Roller Mounting Bracket
1 1/2", 40mm	3", 80mm	4 1/2"	Round	5/16"	2"	Black	Fiberglass	Yes	000000	00000
45mm	90mm	__	Round	5/16"	2"	Black	Fiberglass	Yes	000000	0000

T-Slotted Framing Cable Holders and Duct

Route wires, cables, and tubing along T-slotted rails.

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

Wire Ducts

End Cap

Wire duct mounts to a T-slot with the included clips. Lay bundles of cable, wire, and tube in the duct, then snap on the cover to create an enclosed raceway.

Wire duct end caps mount to the ends of wire duct to keep out dust and grime.

End Caps
For Rail Ht.	Wd., mm	Ht., mm	Color	Material		Each
1 1/2", 40mm	40	40	Gray	Fiberglass-Reinforced Plastic	00000000	00000
40mm, 80mm	40	80	Gray	Fiberglass-Reinforced Plastic	00000000	0000
80mm	80	80	Gray	Fiberglass-Reinforced Plastic	00000000	0000

Strut Channel

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.

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"	0.188"	1 1/4"	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	000000
3	6 1/2"	1 5/8"	3/8"	7/16"	No	000000000	00000

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	000000

Structural FRP Fiberglass Square Tubes

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

Use these FRP fiberglass square tubes as an alternative to wood in structural applications. Made of fiberglass-reinforced polyester, 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. (-0.019" to 0.019")
1"	-0.094" to 0.094"	1"	-0.094" to 0.094"	3/4"	3/4"	0.03” per ft.	0000000	000000	0000000	000000
1 1/4"	-0.094" to 0.094"	1 1/4"	-0.094" to 0.094"	1"	1"	0.03” per ft.	0000000	00000	0000000	00000
1 1/2"	-0.094" to 0.094"	1 1/2"	-0.094" to 0.094"	1 1/4"	1 1/4"	0.03” per ft.	0000000	00000	0000000	00000
1 3/4"	-0.094" to 0.094"	1 3/4"	-0.094" to 0.094"	1 1/2"	1 1/2"	0.03” per ft.	0000000	00000	0000000	00000
2"	-0.094" to 0.094"	2"	-0.094" to 0.094"	1 3/4"	1 3/4"	0.03” per ft.	0000000	00000	0000000	00000
1/4" Wall Thick. (-0.038" to 0.038")
2"	-0.094" to 0.094"	2"	-0.094" to 0.094"	1 1/2"	1 1/2"	0.03” per ft.	0000000	00000	0000000	000000
2 1/2"	-0.094" to 0.094"	2 1/2"	-0.094" to 0.094"	2"	2"	0.03” per ft.	0000000	00000	0000000	000000
3"	-0.094" to 0.094"	3"	-0.094" to 0.094"	2 1/2"	2 1/2"	0.03” per ft.	0000000	000000	0000000	000000
4"	-0.094" to 0.094"	4"	-0.094" to 0.094"	3 1/2"	3 1/2"	0.03” per ft.	0000000	000000	0000000	000000
3/8" Wall Thick. (-0.056" to 0.056")
6"	-0.094" to 0.094"	6"	-0.094" to 0.094"	5 1/4"	5 1/4"	0.03” per ft.	0000000	000000	0000000	000000

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.
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	00000	00000000	000000

Multipurpose Flame-Retardant Garolite G-10/FR4 Rectangular Tubes

Color: Green
Maximum Temperature: 265° F
Tensile Strength: 32,000-40,000 psi (Excellent)
Impact Strength: 5.5-12 ft.-lbs./in. (Excellent)
Hardness: Rockwell M100 (Extra Hard)
For Use Outdoors: Yes
Specifications Met: MIL-I-24768/27

These rectangular tubes are flame retardant, machinable, and electrically insulating. They’re made of epoxy resin, making them good for use with printed circuit boards, insulating washers, and transformer components. With low moisture absorption, these tubes are often used as thermal insulators. Made with fiberglass fabric reinforcement, they’re strong and easier to machine than other glass cloth phenolics. Garolite G-10/FR4 is also called epoxy-grade industrial laminate and phenolic.

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

Outside				Inside
Width	Width Tolerance	Height	Height Tolerance	Width	Height	Length		Each
0.063" Wall Thickness
2.156"	-0.015" to 0.015"	1.156"	-0.015" to 0.015"	2.03"	1.03"	36"	0000000	0000000
0.093" Wall Thickness
0.436"	-0.015" to 0.015"	0.436"	-0.015" to 0.015"	1/4"	1/4"	36"	0000000	000000
0.561"	-0.015" to 0.015"	0.561"	-0.015" to 0.015"	3/8"	3/8"	36"	0000000	000000
1/8" Wall Thickness
3/4"	-0.015" to 0.015"	3/4"	-0.015" to 0.015"	1/2"	1/2"	36"	0000000	000000
1"	-0.015" to 0.015"	7/8"	-0.015" to 0.015"	3/4"	5/8"	36"	0000000	000000
1/4" Wall Thickness
1 3/8"	-0.015" to 0.015"	1 3/8"	-0.015" to 0.015"	7/8"	7/8"	36"	0000000	000000
1 5/8"	-0.015" to 0.015"	1 1/4"	-0.015" to 0.015"	1 1/8"	3/4"	36"	0000000	000000
1 3/4"	-0.015" to 0.015"	1 1/2"	-0.015" to 0.015"	1 1/4"	1"	36"	0000000	000000

Electrical-Insulating Garolite XXX Rectangular Tubes

Color: Tan
Maximum Temperature: 265° F
Tensile Strength: 12,000-14,000 psi
Impact Strength: Not Rated
Hardness: Rockwell M110 (Extra Hard)
For Use Outdoors: Yes

Commonly used in transformers and switch gear cans on electrical poles, these rectangular tubes are more electrically insulating than Garolite XX. Also known as paper-grade industrial laminate and phenolic, they’re also good for use in insulating washers, bushings, and terminal boards. Made of phenolic resin with paper reinforcement, they’re lightweight yet strong. Though not as strong as Garolite XX, they have better moisture resistance and can hold up in humid environments. These tubes resist splitting during machining. They also won’t wear down tooling as fast as phenolic products with glass cloth reinforcement.

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

Outside				Inside		36" Lg.
Width	Width Tolerance	Height	Height Tolerance	Width	Height		Each
1/16" Wall Thickness (-0.03" to 0.03")
3/8"	-0.015" to 0.015"	3/8"	-0.015" to 0.015"	1/4"	1/4"	0000000	0000000
1/2"	-0.015" to 0.015"	1/2"	-0.015" to 0.015"	3/8"	3/8"	0000000	000000
1/8" Wall Thickness (-0.03" to 0.03")
3/4"	-0.015" to 0.015"	3/4"	-0.015" to 0.015"	1/2"	1/2"	0000000	000000

Easy-to-Machine Garolite LE Rectangular Tubes

Color: Brown
Max. Temperature: 235° F
Tensile Strength: 6,000-15,300 psi (Good)
Impact Strength: 1-1.25 ft.-lb./in. (Poor)
Hardness: Rockwell M105
For Use Outdoors: Yes

Easily turn these rectangular tubes into parts for transformers and switchgears using high-speed tooling. Made with cotton fabric reinforcement, they’re also good for crafting intricate items—from fine-tooth gears to control boards. Though easier to machine, these tubes are not as strong as those with glass cloth or paper reinforcement. Garolite LE is also called industrial laminate and phenolic.

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

Outside				Inside		3 ft. Lg.
Width	Width Tolerance	Height	Height Tolerance	Width	Height		Each
1/16" Wall Thick. (-0.03" to 0.03")
3/8"	-0.015" to 0.015"	3/8"	-0.015" to 0.015"	1/4"	1/4"	0000000	0000000
1/2"	-0.015" to 0.015"	1/2"	-0.015" to 0.015"	3/8"	3/8"	0000000	000000
1/8" Wall Thick. (-0.03" to 0.03")
3/4"	-0.015" to 0.015"	3/4"	-0.015" to 0.015"	1/2"	1/2"	0000000	000000

About Composites

T-Slotted Framing Conveyors

T-Slotted Framing Cable Holders and Duct

Strut Channel

Corner Strut Channel Brackets

Surface Strut Channel Brackets

Structural FRP Fiberglass Square Tubes

Arc-Resistant GPO3 Fiberglass Square Tubes

Multipurpose Flame-Retardant Garolite G-10/FR4 Rectangular Tubes

Electrical-Insulating Garolite XXX Rectangular Tubes

Easy-to-Machine Garolite LE Rectangular Tubes