LCN 3134SE Sentronic Concealed Door Closer with Hold-Open 24V/120V AC/DC - Powder CoatProfessional Fire and Smoke Barrier Door Control SolutionThe LCN 3134SE Sentronic is a concealed-in-door closer/holder designed to provide single-point hold-open functionality for fire and smoke barrier doors. This professional-grade door closer features a 1-1/8" diameter piston with cast iron construction and is specifically designed for interior doors up to 4'0". UL listed for metal smoke barrier or labeled fire doors, it meets ANSI/BHMA A156.15 and NFPA 101 Life Safety Code standards while integrating seamlessly with existing fire and life safety systems.Professional Features & BenefitsDoor Compatibility: Designed for interior doors up to 4'0" with concealed-in-door mounting for clean aesthetics and professional appearance.Heavy-Duty Construction: Cast iron body design with 1-1/8" diameter piston provides reliable performance in demanding commercial applications.Flexible Power Options: Standard 24V/120V AC/DC operation accommodates various electrical system requirements for versatile installation.Fire Safety Integration: UL listed for metal smoke barrier or labeled fire doors with NFPA 101 Life Safety Code compliance for critical safety applications.Dual-Function Operation: Functions as full rack-and-pinion door closer when hold-open is not engaged or electrical current is interrupted.All-Weather Reliability: All-weather fluid ensures consistent operation across temperature variations in commercial environments.Adjustable Hold-Open Force: Field-adjustable hold-open force allows customization for specific door weight and application requirements.Manufacturer Warranty: 2-year limited warranty provides added confidence and protection for professional installations.Technical SpecificationsADA Compliant: YesBAA Qualified: YesCloser Size: 4Commercial/Residential: CommercialDefault Arm/Track: Standard Arm (STDTRKARM)Delay Function: NoDepartment: Door HardwareDoor Type: Interior DoorElectronic: YesFasteners: Wood and Machine ScrewsFinish Type: Powder CoatFluid Type: All-WeatherHandle Type: LeverMounting Detail: Concealed - In the DoorMounting Location: In the DoorMounting Method: ConcealedProduct Category: Door ControlsProduct Group: Door ControlsProduct Model: 3134SEProduct Subgroup: Door Closers - Electromechanical (Fire and Life Safety)Product Substrate: IronProduct Type: Door ClosersProduct Voltage: 24V, 120V AC/DCSeries: 3130SE SeriesSubcategory: Fire and Life Safety ClosersWarranty: 2 YearProfessional ApplicationsCommercial Office BuildingsEducational FacilitiesHealthcare InstitutionsRetail EstablishmentsIndustrial and Warehouse FacilitiesMulti-Tenant Residential PropertiesGovernment and Municipal BuildingsWhy Choose LCN Quality?LCN door closer products deliver professional-grade reliability with cast iron construction and all-weather fluid rated for demanding commercial applications. Backed by a 2-year limited warranty and UL listing for fire safety applications, LCN Sentronic closers provide the dependable performance essential for life safety systems. Engineered for seamless integration with fire alarm systems while maintaining the aesthetic appeal of concealed installation.