The UAP Framemaster is a versatile letterplate suitable for uPVC, composite, and wooden doors with thicknesses ranging from 20mm to 40mm. It features an adaptable telescopic design for easy installation with aligning screws. The flaps meet BS EN 13724:2013 standards and have been tested for durability, with hinge springs enduring over 100,000 cycles. The Xfort MailPlate variant, also within this range, offers a similar design with stainless steel flaps, an anti-scratch black plastic frame, and patented anti-snap flaps that open to 180 degrees. It comes in a polished brass finish and is designed for doors between 20-40mm thick.