MAKROLONHYGARD® CG375 laminate is a two-ply MAKROLON polycarbonate sheet for architectural security glazing applications and specialty vehicle glazing.

MAKROLON HYGARD CG375 laminate features abrasion and UV resistant hard-coated surfaces for extended service life in harsh environments.


MAKROLON HYGARD CG375 laminate is used primarily in detention facility and prison glazing to meet specific requirements for protection against forced entry/egress into or from controlled areas. In addition, CG375 is used as cab glazing in off-road heavy equipment for protection from debris and projectiles.

Typical Physical Properties

Gauge/Tolerance .390 ±5%
Weight 2.4 lbs./s.f.
Shading Coefficient .92
% Light Transmittance 86% (clear)
Colors Standard:Clear
Custom Colors on request
Sheet Sizes
Standard: 38˝ x 96˝
48˝ x 60˝
60˝ x 96˝
Custom Sizes on request

Sheffield Plastics Inc. will not be responsible for the use of this information relative to actual application. Users must make their own determination of its suitability for their specific application. No warranty is made for the fitness of any product, and nothing herein waives any of the seller’s conditions of sale.


  • Use of structural security framing systems with equal or greater forced entry and/or ballistics ratings as the selected MAKROLON HYGARD laminate is recommended.
  • Size MAKROLON HYGARD laminates to allow for a minimum of 1˝ edge engagement in the frame, with sufficient rabbet depth for material expansion (approx. 1/16˝/ft.).
  • Use wet or dry sealants/gaskets that are compatible with polycarbonate.
  • Remove protective masking after glazing operations are completed and before prolonged exposure to direct sunlight, moisture, or high temperature.


  • Rinse with clean water to remove abrasive dust and dirt.
  • Wash with soap or mild detergent using a sponge or soft cloth. Do not scrub.
  • Rinse once more. Dry with a soft cloth or chamois to prevent water spots.
  • To remove labels, stickers, or grease, rub gently with a cloth wetted thoroughly in VM&P naptha or isopropyl alcohol. Wash and rinse. Do not use razor blades, scrapers, or squeegees.


HPW TP0500.01 Level II Step 11
HPW Level A Ballistics (.38 Special)
ASTM F1233 Class IIIStep 12

Product Specification

Two-ply, clear MAKROLON polycarbonate sheet constructed as follows:

  • 3/16˝ MAKROLON polycarbonate sheet with high AR abrasion-resistant surface
  • Polyurethane bonding interlayer
  • 3/16˝ MAKROLON polycarbonate sheet with high AR abrasion-resistant surface

Material shall have a flexural strength of at least 13,500 psi per ASTM D-790; and shall have AR (high performance abrasion-resistant) surfaces for enhanced service life and resistance to marring. Material shall exhibit a self ignition temperature of 1077°F and a flash ignition temperature of 872°F (ASTM D-1929), and conform with ICBO & BOCA Model Building Codes as a CC-1 rated Approved Light Transmitting Plastic.