Original 1976 insulation trade vintage catalog for GREFCO, INC. (Building Products Division). General office was located at 3450 Wilshire Blvd, Los Angeles, CA.

Manufacturers of Building Insulation. 'Perma-Fastner System of Mechanical Attachment of Insulation to Metal Roof Decks'.

'Perma-Fastner a wind-resistant system of mechanical attachment of insulation to metal roof decks. Perma-Fastner System is a combination of matched materials which together offer maximum wind resistance and ease of application'.

Products include Perma-Fastner Stress Distribution Plates, Perma-Fastner Screws and Perma-Fastner Tools, all are fully featured.

Has product images, illustration, description, applications and specifications to provide product details.

Unbound from a large rare 1976 Architectural Catalog, this unique old four-page technical brochure would display beautifully matted and framed. Awesome cover graphics. A fabulous addition to your retro roof insulation and equipment library.