Patio door handle says: Allen-Stevens Co. RD 1965

Hello,

We'd be happy to look into this for you but the manufacturer does not indicate the hardware that the door uses since many of our parts are generic. To get started, we'd need to see detailed photos of the handle set and have you write out the exact distance between the installation hole centers. Seeing the mortise lock in the center of the door could also help us narrow down your options. Thank you!