New patented four-way ceiling diffuser grilles now available ONTARIO, Calif. - September 1, 2021 - Wallner Expac, North America’s largest manufacturer of light gauge expanded for air filters and the .
X-Mesh® Patent 8,696,781 RANCHO CUCAMONGA, Calif. — May 30, 2014 — Wallner Tooling/Expac proudly announced today that a patent has been awarded for their innovative new product. X-Mesh Patent No. .
