AAMA has updated and released a document specifying requirements of cellular PVC exterior profiles used in windows, doors, and skylights. Standard now includes use of reworked materials, change in heat resistance, in-process quality control sampling methods, and up-to-date references to ASTM and AAMA documents. Requirements included in publication are specifications for dimensional stability, weatherability, heat resistance, weight tolerance, heat build-up, Shore D Hardness, and lead content.