Diamond Sea Glaze designs and manufactures custom windows, doors and hatches for customers around the world. DSG delivers what our customers demand: sleek, strong and secure closures.

DSG closures have quality built in – so everything else stays out. Each order is manufactured separately from beginning to end in our 80,000 sq. ft. vertically integrated plant just outside Vancouver, Canada. We are one of a few closure manufacturers in the world that insists on processing its own glass so we can ensure optimum quality control.