Kent Window, Inc. is the Grand Rapids-based manufacturer of the Harbor Window™ a premium vinyl window line for replacement and new construction. Founded in 1983, our customers range from homeowners replacing a few windows to independent home builders creating high-end custom homes to big construction companies building large-scale condominium and retirement communities.

Every window we build is custom-made to customer specifications. The Harbor Window™ carries the highest ratings in terms of water and air filtration. Not just lab tested, but field proven in thousands of homes like yours.

Discover for yourself how easy it is to deal with West Michigan's own vinyl window manufacturer. Our products are backed by lifetime warranties, and our service is hard to beat.