Lockey M220 Mechanical Surface Mount Digital Keyless Combination Lock with 3/4″ DeadboltProfessional Keyless Entry Solution for Commercial ApplicationsThe Lockey M220 Mechanical Surface Mount Digital Keyless Combination Lock provides reliable keyless entry with a 3/4″ deadbolt throw for enhanced security. This surface/rim mount lock features zinc-plated steel construction with Teflon coated stainless steel interior components and accommodates door thickness from 1-1/8″ to 2″. Designed for both exterior and interior use with weather-resistant construction, the M220 offers changeable handing and reversible long/short bar configuration for versatile installation options.Professional Features & BenefitsVersatile Door Compatibility: Accommodates door thickness from 1-1/8″ to 2″ standard, with extension capabilities for doors 1/8″ thick up to 5″ thick using optional kits.Dual Deadbolt Configuration: Reversible long throw bar (2-1/4″) and short throw bar (7/8″) options provide flexibility for different door and frame configurations.Heavy-Duty Construction: Zinc-plated steel housing with Teflon coated stainless steel interior components ensures long-lasting durability and smooth operation.Weather-Resistant Design: Engineered for both exterior and interior applications with weather-resistant construction for reliable outdoor performance.Flexible Installation: Surface/rim mount design with changeable handing allows adaptation to various door configurations and swing directions.Narrow Stile Compatibility: Compact 4-7/8″ L x 1-1/2″ W x 1-3/4″ D dimensions make it ideal for narrow stile doors and cabinet applications.Mechanical Operation: No electrical power required – purely mechanical operation ensures reliable function without battery or wiring concerns.Multiple Finish Options: Available in seven professional finishes including Antique Brass, Bright Brass, Jet Black, Marine Grade, Satin Chrome, Satin Nickel, and White.Technical SpecificationsCommercial/Residential: CommercialDepartment: Door HardwareDoor Thickness Range: 1-1/8″ to 2″Product Category: Mechanical LocksProduct Dimension: 4 7/8″ L x 1 1/2″ W x 1 3/4″ DProduct Group: Mechanical LocksProduct Subgroup: Mortise Locks and TrimProduct Substrate: Zinc-Plated SteelProduct Type: Digital LocksSubcategory: Mechanical Push ButtonsProfessional ApplicationsCommercial Office BuildingsEducational FacilitiesHealthcare InstitutionsRetail EstablishmentsIndustrial and Warehouse FacilitiesMulti-Tenant Residential PropertiesGovernment and Municipal BuildingsWeather-Resistant ConstructionThe M220 features weather-resistant construction suitable for both exterior and interior applications. The zinc-plated steel housing with Teflon coated stainless steel interior components provides reliable performance in various environmental conditions while maintaining smooth mechanical operation.Why Choose Lockey Quality?Lockey mechanical locks deliver professional-grade reliability with zinc-plated steel construction and Teflon coated stainless steel interior components for smooth, long-lasting operation. The weather-resistant design and mechanical operation ensure dependable keyless entry without the complexity of electronic systems. Engineered for demanding commercial applications where reliable keyless access control is essential.