Fiberglass Square Tubing

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47 Products

About Composites

Strut Channel

Fiberglass channel is nonconductive with good resistance to chemicals and salt water. It's about half the weight of aluminum and has thicker walls than the other materials.

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.

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

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	0000000	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"	3/4"	0000000	000000	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°	3/8"	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
18	2 5/16"	3"	1/4"	-30° to 200°	9/16"	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

Strut Channel Floor Mounts

Securely fasten strut channel to the floor.

Plastic mounts are nonconductive and lightweight with good resistance to chemicals.

Rubber mounts are the least abrasive and they distribute loads better than metal mounts. They’re often used on roof surfaces.

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

For Standard Strut Channel

Plastic Straight Post, For One Strut Channel

Rubber Straight Post, For One Strut Channel

For Strut Channel							Mounting Holes			Post Holes
Ht.	Wd.	Lg.	Wd.	Ht.	Thick.	Fasteners Included	No. of	Dia.	Ctr.-to-Ctr.	Dia.	Ctr.-to-Ctr.		Each
Straight Post, For 1 Strut Channel
Gray Plastic
1 5/8"	1 5/8"	5"	5"	3"	3/16"	No	4	3/8"	3 3/4"	3/8"	15/16"	00000000	000000
Black Rubber
1 5/8"	1 5/8"	12 3/8"	12 3/8"	4 5/8"	11/16"	Yes	4	7/16"	10 7/8"	1/2"	__	000000000	000000

For Back-to-Back and Side-to-Side Stacked Strut Channel

Plastic Straight Post, For Two Strut Channels

For Strut Channel							Mounting Holes			Post Holes
Ht.	Wd.	Lg.	Wd.	Ht.	Thick.	Fasteners Included	No. of	Dia.	Ctr.-to-Ctr.	Dia.	Ctr.-to-Ctr.		Each
Straight Post, For 2 Strut Channels
Gray Plastic
1 5/8"	1 5/8"	6 5/8"	5"	3"	3/16"	No	4	3/8"	3 3/4", 5 3/8"	3/8"	15/16"	00000000	000000

Strut Channel Nuts

Serrated grooves securely grip the lip of the channel.

Fiberglass nuts are about half the weight of aluminum. They’re nonconductive and have good resistance to chemicals and salt water.

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

Fiberglass
Thread Size	For Strut Channel Ht.	For Strut Channel Wd.	Ht.	Pkg. Qty.		Pkg.
1/4"-20	1 5/8", 2 7/16", 3 1/4"	1 5/8"	17/32"	1	00000000	00000
3/8"-16	1 5/8", 2 7/16", 3 1/4"	1 5/8"	17/32"	1	00000000	0000
1/2"-13	1 5/8", 2 7/16", 3 1/4"	1 5/8"	17/32"	1	00000000	0000

Sit-on-Top Strut Channel Washers

Add hardware to strut channel without having to hold the washer in place or reach inside the channel. Use with hex nuts to connect threaded rod.

Fiberglass washers are nonconductive. They also have good resistance to chemicals and salt water.

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

		For 13/16", 1 5/8", 2 7/16", 3 1/4" Channel Ht.
For Rod Dia.	For Strut Channel Wd.		Each
Fiberglass
3/8"	1 5/8"	00000000	00000
1/2"	1 5/8"	00000000	0000

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	000000	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
Width	Width Tolerance	Height	Height Tolerance	Width	Height	Straightness Tolerance		Each
4 ft. Lg.
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	0000000
5 ft. Lg.
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	00000
6 ft. Lg.
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

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
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 5/8"	-0.015" to 0.015"	1 1/4"	-0.015" to 0.015"	1 1/8"	3/4"	36"	0000000	000000