keystone moulding
Keystone moulding molded in high-density polyurethane serves as a central architectural wedge block at arch apexes.
Frequently Asked Questions
What is keystone moulding?
A wedge-shaped decorative block set at the crown of an arch or window casing.
How is keystone moulding installed?
It glues into position cleanly using polyurethane assembly mastic adhesive.