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How To Measure and Cut-To-Size Policy | Close it

Cut-To-Size Items are Non-Returnable!

As per our Shipping and Returns Policy, custom cuts and fabricated parts are non-returnable. If you need an over- or undersized item, note it under \"Comments\" during Checkout. Cut-to-size orders have an acceptable cut tolerance of 1/8" (0.125"), so clarify if the adjustment is to be made on the (+) or (-) side of the saw blade. Please review our full return and shipping policy here.

Measure Twice, Cut Once

Since custom cuts and fabricated parts are non-refundable, be very careful while measuring your dimensions. As each cut is nominal, even the slightest miscalculation could be costly.

How to Use a Measuring Tape

Extend your tape measure several inches to find the 1 and 2 inch markers. In between the inch markers you’ll find 16 equally spaced tick marks.

Measure by counting the increments beyond the nearest inch. As the increments decrease, so does the length of the mark. For example, 1/2\" has a bigger mark than 1/4\" which has a bigger mark than 1/8\". The smallest mark follows at 1/16\". Please be aware that some measuring tapes may have even smaller increments.

Features of a Measuring Tape: Sliding End Hook

The sliding end hook is designed for two different types of measurements. An outside measurement (where the hook of the tape hangs over an edge), requires the hook to slide out a bit to account for the thickness of the material. When making an inside measurement (where the hook will push up against a surface), the clip slides in, again, accounting for its thickness. The measuring tape self-adjusts to guarantee an accurate measurement (as far as the tape is concerned).

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***Due to severe market volatility on HDPE and Polypropylene materials, quoted pricing for these products are valid for 4-5 days from the quoted date and surcharges have been temporarily added into the cost. Pricing and delivery of these products will be confirmed back in 24 to 48 hours. Please contact our sales team for any updates and questions you may have.***

5% Boron HDPE radiation shielding sheets are specially designed for nuclear shielding applications. They are composed of 5% Boron by weight, while the rest of the sheet is made of HDPE. The Boron in these sheets shields against neutrons in a wide array of applications, including X-rays, nuclear submarines, cancer treatment facilities, and nuclear power plants. At a lower cost and lighter weight than lead, HDPE radiation shielding sheets can be used to replace lead in nuclear shielding applications. Available as a Mil-P-23536 certified and inspected material.

[PDF Spec Sheet]

  • Lower cost than lead
  • Lighter weight than lead
  • Replaces lead in nuclear shielding applications
  • 5% boron by weight - HDPE base material
  • Can be certified to Mil-P-23536 A Type B (1/2%, 1%, or 2% Boron by weight)
  • Mil-P-23536 certified material is inspected per Mil-I-45208 A

Product Reviews


Material: HDPE
Water Absorption: 0.01% @ Saturation
Density: 63.05 lbs/ft.^3
Tensile Strength: 2800 psi (Yield)
Elongation: 300% @ Break
Hardness: 62 (Shore D)
Heat Deflection Temp: 174°F
Vicat Softening Temp: 262°F
Melting Point: 271°F
Dielectric Constant: 2.3

Frequently Asked Questions

Why should I buy from Inadma?
We've been in the Plastic business for decades and maintain a quality stock of all types of plastics and accessories, shipped quickly to you.

What is Inadma's Shipping Policy?
Shipping will vary based on whether your order contains custom or cut-to-size products. Details about shipping can be found here.

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Yes, we implement a variety of security measures to maintain the safety of your personal information. Your information is protected both online and offline.

WARNING: This product can expose you to chemicals including Carbon Black, CAS 1333-86-4, which are known to the State of California to cause cancer. For more information go to

WARNING: This product can expose you to chemicals including TiO2, CAS 13463-67-3, which are known to the State of California to cause cancer. For more information go to
Disclaimer: InAdMa makes no representations about any of its products that are modified in any way after they leave its possession, nor do its representations apply when any of its products are improperly used or stored. Each customer of Interstate Plastics bears full responsibility for making its own determination as to the suitability of each material, product, recommendation or advice provided by Interstate Plastics. Each customer of Interstate Plastics must identify and perform all tests and analyses necessary to assure that its finished parts incorporating materials from Interstate Plastics will be safe and suitable for use under end-use conditions.