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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).

Aluminum Vent Tape

Aluminum Vent Tape

Polygal Aluminum Vent Tape For Polycarbonate Multi-wall Applications.


Price for 1.0"x108ft Aluminum Vent Tape Qty: 1


* Prices are subject to change every 6 days
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Aluminum vent tape from Interstate Plastics is (generally) used for sealing the top and bottom edges of twinwall and multi-wall polycarbonate and acrylic sheets. Applied properly, it seals the polycarbonate interior, allowing moisture to exit while blocking debris and water, stopping mold, algae, insects and dust from accumulating within the walls of the polycarbonate and acrylic sheets. The aluminum tape also prevents noise created from the polycarbonate sheeting's expansion and contraction in response to temperature changes.

Note: 6mm (.236") and 8mm (.315") wall should be used with 1"x108' tape. 10mm (.394") and 16mm (.630) wall should be used with 1.5"x108' tape.

Ensure the polycarbonate side that reads "UV side out" faces outward before applying the tape to prevent accidentally taping the top or flipping the sheet and leaving the wrong side exposed to the sun.

  • Easy to apply
  • Seals seams in polycarbonate applications.
  • Blocks debris and water with proper drainage of condensation.
  • Stops mold, algae, insects and dust from accumulating.
  • Allows moisture to exit.
  • Superior quick stick at normal temperatures.
  • Superior low temperature performance at freezing temperature.
  • Prevents excess noise from thermal expansion.

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Frequently Asked Questions

Why should I buy from Interstate Advanced Materials?
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 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 your site secure?
Yes, we implement a variety of security measures to maintain the safety of your personal information. Your information is protected both online and offline.

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.