Slider door handle with lock mechanism, inside handle says "Relectolite Prod Inc. Patent Pending 2800-03

Hello, thank you for posting,

Please start by reviewing the style and dimensions of the 82-218 mortise lock and 82-030 handle set to see how they compare to your original. The handle set has a 3-15/16" installation hole spacing from center to center. Let us know what you think and if you have any additional questions.