Square Tube Sample Packs


Select the length of the square tube samples

Fiberglass Square Tube Sample Pack

Working on a project and don’t know which tube will do the job? These square tube sample packs are perfect for quickly getting a single piece of each square tube in order to evaluate your needs at a very low cost.

We now offer your choice of two “square tube sample packs” which include one piece each of our square fiberglass tubes. These packs are ideal to examine fit, finish, mechanical properties, etc. on a variety of our products. Included are approximately 6 inch or 2 foot long pieces of all round tube products.

Square Tube Typical Properties

Square Tube Properties

For more information on round tube, square tube, and round solid rod sleeving, check out the Fiberglass Sleeving & Reinforcement Guide at the link below:

Fiberglass Sleeving & Reinforcement Guide

Sizes included in the Square Tube sample pack:

P/N: ST-1LOG-18-S
ST-1 1 inch On-Side Square Tube 250x250 - Max-Gain Systems, Inc.
1 inch On-Side Square Tube

P/N: ST-125LOG-18-S
ST-125 1.25 inch On-Side Square Tube 250x250 - Max-Gain Systems, Inc.
1.25 inch On-Side Square Tube

P/N: ST-150LOG-18-S
ST-150 1.50 inch On-Side Square Tube 250x250 - Max-Gain Systems, Inc.
1.50 inch On-Side Square Tube

Square Tube Sleeving and Reinforcement
Sleeving and Reinforcement Guide Square Tube and 3D

Note: Our square tube to square tube sleeving combinations, while perfect for reinforcement or extension applications, will be too snug for full-length slip-fit applications, such as push-up masts. Our square tube will only sleeve 6-12 inches. The square tube to round tube mating combinations will yield less strength at the joint (due to only 4 point contact) than either round-to-round or square-to-square combinations.

Square Tube
Tubing Size
Accepted Inside Sizes
Accepted Outside Sizes
1.25″ on-side X 1/8″ wall square tube (snug fit)
1.5″ on-side X 1/8″ wall square tube (snug fit)
1.75″ on-side X 1/8″ wall square tube (snug fit)
2″ on-side X 1/4″ wall square tube (snug fit)
2″ on-side X 1/8″ wall square tube (snug fit)
No direct available sizes
No direct available sizes

Fiberglass Information and Resources


Fiberglass Joining 250x250 - Max-Gain Systems, Inc.

Joining and connecting tubes and rods together through many different methods. Find out which method works for you!


FG Circular Saw Raw 250x250 - Max-Gain Systems, Inc.

Information on cutting and drilling fiberglass tube and rods. Including which tools work best!


Bonding & Adhesives 250x250 - Max-Gain Systems, Inc.

Information on bonding fiberglass shapes together thru chemical adhesion. Including what NOT to use!


Painting Fiberglass with Rustoleum Spray 250x250 - Max-Gain Systems, Inc.

Information on painting fiberglass tube and rods. Best practices and tips on how to make it less visible.


Fiberglass Quad Spreaders and other sleeved fiberglass 250x250 - Max-Gain Systems, Inc.

We offer telescoping, Quad Spreaders with usable lengths up to a total of 26 feet! Telescoping Quad Spreaders are discounted from individual piece prices! See our Quad Spreader Information Sheet for details.


Quantity discounts on fiberglass preformed shapes 250x250 - Max-Gain Systems, Inc.

Buying ten or more quantity of one size of fiberglass qualifies for a 10% quantity discount on that item. Fifty or more, of one size, qualifies for 15%, and one hundred or more 20%.


Manufacturing pultruded fiberglass tube and rod 250x250 - Max-Gain Systems, Inc.

If you are a reseller or manufacturer, you may qualify for our factory-direct, wholesale/O.E.M. pricing! SUBSTANTIAL savings are possible with increasing volume, and our customer service is unsurpassed. Email us for quantity pricing.


Drilling3 grayscale 250x250 - Max-Gain Systems, Inc.

Available free by telephone. For almost unlimited life, we highly recommend that any fiberglass – even ours which is UV-stabilized – be painted. A sprayed primer coat and flat-black top coat, works best. (See our Max-Tips Info Sheet for details.)

About Max-Gain Systems, Inc.

Max-Gain Systems, Inc. carries a full line of in-series, between series, right angle, T-shaped, quick connect, handie-talkie (BLACK), pigtails (coaxial jumpers), etc… RF adapters. Our RF adapter lines are constantly expanding. We keep our RF connector and adapter lines in stock. We ship both retail and wholesale quantities. To become a dealer / wholesale user, contact us with your potential usage.

Max-Gain Systems, Inc. is the number one supplier of fiberglass round hollow tube, square tube and round solid rod to the antenna manufacturing industry. We produce millions of feet a year for hundreds of different industries including but not limited to:  marine / boating, aeronautical, agriculture, construction, emergency services, etc….  We have the unique ability to sell one piece or even a semi-truck full. Feel free to prototype using our fiberglass tube and rod then contact us for a quote on a production run. At production run quantities we can cut to your desired lengths at no additional charge, and we can also perform several different fabrications (example: drilling holes in precise locations along a tube) to ensure your delivered material is ready for assembly. We have several accessory items designed for our fiberglass including but not limited to: couplers, telescoping clamps, ferrules, etc…


Additional information

Shipping Weight N/A
Shipping Dimensions N/A
Fiberglass Type

Square Tube

Wall Thickness

1/8" Wall


Lt. Olive Green

Length of Sections



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