As part of its ongoing commitment to excellence, Keystone has taken a significant step forward by constructing its own in-house test lab.

A 12' x 16' test wall was purchased from Architectural Testing, Inc. which now allows us to conduct air, water and structural tests on our products during the design phase as well as provide production line testing for air and water. All of this will further insure that nothing but top rated, dependable products are delivered to our customers.