Specifying Windows and Doors Using Performance Standards

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Product Designation System
R – PG 15 – (63x44) – Type HS
Using these key elements of product type, performance class and performance
grade, we are ready to construct the performance rating, which you will use to
specify a window or door for a specific application.
The rating consists of a four-part product designation, which has changed
somewhat from the preceding editions of the standard:
The four parts include:
1. Performance class - here it is R, which we will address later.
2. Performance grade – that is, the minimum design pressure for the
performance class. Here it is 15 for a 15 psf design pressure.
3. Maximum size tested - here it is 63 inches wide by 44 inches high.
4. Product operator type - in this example, it is “HS” for horizontal sliding
window.