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www.fdanews.com/articles/158042-envirco-introduces-the-mac-t-ceiling-grid-system-for-cleanrooms

Envirco Introduces the MAC-T Ceiling Grid System for Cleanrooms

August 21, 2013
Envirco today announced their new MAC-T Ceiling Grid System, a 2” Gasket Seal Grid Cleanroom Ceiling System. This product is fabricated using materials to provide both a structural grid system and zinc alloy die-castings.
The San Francisco Chronicle