There are three sizes depending on the hallow space of the deadbolt lock that can be used on certain doors with a mortise lockset.

V1 being 0.40H x 0.20W x 0.25L, 

V2 being 0.20H x 0.20W x 0.25L

V3 being 0.30H x 0.20W x 0.25L

This is my very first model to upload as a test. If there are any issues, feel free to reach out and send feedback.