Call us now (866) 522-0540
Search Icon Menu Icon
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).

Polycarbonate Twinwall Red Translucent

Polycarbonate Twinwall Red Translucent

Twinwall | Red Polycarbonate Sheet, PolyGal®


Save with our Volume Pricing:
QuantityPrice Each
20 - 49$164.87

Price for .394" x 48" x 96" Red Twinwall Polycarbonate Sheet Qty: 1


* Prices are subject to change every 6 days
Login or Create an Account to Get As low as $16/month with


Polycarbonate twinwall sheet is known for its outstanding durability, light transmittance, and clarity. It is easy to install and features high impact resistance. Twinwall is UV-resistant - it will not become discolored and only allows beneficial light to pass through. It is a great choice for greenhouses, light transmission applications, architectural design, roofing and windows, and hurricane and storm window/roofing protection. Twinwall weighs up to twelve times lighter than glass and is flame retardant.

[PDF Spec Sheet]

  • Highly Flexible, Virtually Unbreakable
  • Extreme Durability & Impact Resistance
  • UV Protected from the Elements
  • Easy to Machine and Install
  • High Light Transmission
  • Multiple Colors Available
  • Flame Retardant
  • Transparent up to 2" thick with great light transmission
  • Wide temperature operating range (-40°F to 280°F)
  • Cutting can be done on a standard circular, jig, or table saw with a blade having 8-12 teeth per inch. Thinner gauges can be cut with a box knife.
  • Drilling is performed with standard wood drill bits.
  • Trim with a standard box cutting knife.
  • Bending is done by cold forming along the direction of the flutes. Bending guides are available.
  • Bonding ("gluing") can be done with Weld-On 55 adhesive.

Product Reviews


Specific Gravity (g/cc): 1.2
Tensile Strength: 8700 psi (Yield)
Elongation: 155% @ Break
Heat Deflection Temp: ~266F

Frequently Asked Questions

What sets Interstate Advanced Materials apart?
Interstate Advanced Materials empowers customers to choose their pricing by maintaining a membership, available through tier levels that unlock access to exclusive pricing as well as shipping and volume discounts

What is Interstate Advanced Materials's Shipping Policy?
Our shipping policy can be found here and orders placed for non-cut-to-size stock items typically ship within 3 working days.

Is Interstate Advanced Materials site secure?
Absolutely. Your information is passed through our https site when you make a purchase. Your Credit Card is never stored on file.

WARNING: This product can expose you to chemicals including Bisphenol A, CAS 80-05-7 , which are known to the State of California to cause birth defects or other reproductive harm. For more information go to
Disclaimer: Interstate Advanced Materials 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.