The UAP Framemaster is the go-to replacement for a majority of postal letterplates. Its adaptable telescopic design allows it to adjust seamlessly to doors with thicknesses ranging from 20mm to 40mm. Compatible with most uPVC, composite, and wooden front doors. The UAP Framemaster offers a simplified installation with aligning screws on each side that match up perfectly with their corresponding receivers, ensuring a swift and robust assembly. With flaps that meet the rigorous standards of BS EN 13724:2013, they have undergone machine testing to guarantee their durability. Furthermore, the highly resilient hinge springs have been rigorously tested to endure over 100,000 cycles of opening and closing. For detailed dimensions and to confirm compatibility, please refer to the accompanying images.