Callan Model 205S – Grade 3 One Sided Half-Bore DeadboltOne Sided Function:One sided deadbolts are not keyed and only have an associated thumb turn on the inside that can quickly and easily lock or unlock the mechanism. The half bore function means there is no exterior plate, only the interior turn button.Features:Meets BHMA security grade 3 requirementsMade of durable zincFully reversible handing for left or right handed applicationsDesigned for an easy one person installationComes standard with a round corner latch faceplate and 1″ throwIncludes a limited lifetime warranty on mechanical parts and a five year warranty on finishMeets the requirements for the American’s with Disabilities Act (ADA)Specifications:Backset: Adjustable 2-3/8″ or 2-3/4″Cross Bore: 2-1/8″Edge Bore: 1″Door Thickness: 1-3/8″ to 1-3/4″Handing: Reversible Left or RightDiameter: 2-1/2″Projection: 15/16″Latch Faceplate: Round CornerConcealed Screws: NoMaterial: ZincTechnical Specification Download