This specification covers optical quality, transparent, modified acrylic plastic sheet.

The plastic sheet is furnished in the following types and classes (see 6.2).

The types of plastic sheet are as follows:

         Type I  - For "as cast" applications or for stretching.
         Type II - For "as cast" applications only; not for stretching.

The classes of plastic sheet are as follows:

         Class 1 - Standard moisture absorption resistance.

         Class 2 - Improved moisture absorption resistance.

Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Air Warfare Center Aircraft Division, Code 414100B120-3, Highway 547, Lakehurst, NJ 08733-5100, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.