This is a specialized hardware accessory designed for double-hinged door installations where both doors come together squarely. This kit allows for precise fitting and alignment of locks on rebated doors, ensuring a secure and seamless closure. This kit is compatible with various knob and lever locksets, providing an adaptable solution for door hardware installations. The rebate kit includes components that help adjust and align locks on doors with a 13mm rebate preparation, enhancing the overall functionality and appearance of double door systems.