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Mon-Ray, Inc.


7900 Excelsior Blvd #140
Minneapolis, MN 55427-4713 USA
(763) 544-3646

Mon-Ray is the exclusive manufacturer of DeVAC aluminum windows and Mon-Ray secondary glazing window systems. For over fifty years DeVAC and Mon-Ray products have been industry leaders in high-performance air, water, structural, and acoustical standards. Together, DeVAC and Mon-Ray products offer a wide variety of custom interior, exterior, or total replacement applications for historic preservation projects. DeVAC and Mon-Ray windows are the perfect solution for preserving the design, size, shape, color, character, and integrity of the original window system.