The Excellart ESP-Flex Hinged Frame, crafted from 6063-T6 architectural-grade aluminum, is our standard choice for hinged flex frame systems, ideally suited for retrofitting rigid face or stick-built signs to flex face. This frame includes built-in backing and supports the addition of components to achieve the required depth. It is specifically designed for use with hinged cabinets, allowing access to internal components, with the hinge located only at the top. Note: This frame is not suitable for kerf cutting.