LCN Fusible Link Hold Open Arm for 4020 Series Door Closers with 165F Temperature ReleaseFire Safety Hold Open Arm with Automatic Temperature ReleaseThe LCN Fusible Link Hold Open Arm provides automatic fire safety compliance for 4020 Series door closers by releasing the hold open function when exposed to temperatures above 165F. This handed replacement component features a 3 7/8" (98 mm) maximum reveal and adjustable positioning at the shoe for precise installation requirements. Designed specifically for commercial applications requiring fire code compliance with automatic door closure during emergency conditions.Professional Features & BenefitsTemperature-Activated Release: Automatically releases hold open function at 165F for fire safety compliance and emergency egress requirements.Precise Dimensional Specifications: 3 7/8" (98 mm) maximum reveal provides accurate clearance measurements for proper door closer integration.Adjustable Shoe Positioning: Field-adjustable at shoe location allows fine-tuning for optimal door alignment and operation.4020 Series Compatibility: Engineered specifically for LCN 4020 Series door closers ensuring perfect fit and reliable operation.Handed Configuration: Available in handed versions to accommodate specific door swing requirements and installation constraints.ADA Compliant Design: Meets ADA accessibility requirements for commercial door hardware applications.Commercial-Grade Construction: Built for demanding commercial environments with reliable fire safety performance.Technical SpecificationsADA Compliant: YesCommercial/Residential: CommercialDepartment: Door HardwareParts and Accessories Type: Replacement PartsProduct Attribute: Parts and AccessoriesProduct Category: Door ControlsProduct Group: Door ControlsProduct Model: 4020-3049Product Subgroup: Parts and AccessoriesProduct Type: Hold Open ArmSeries: 4020 SeriesSubcategory: Parts and AccessoriesProfessional ApplicationsCommercial Office BuildingsEducational FacilitiesHealthcare InstitutionsRetail EstablishmentsIndustrial and Warehouse FacilitiesMulti-Tenant Residential PropertiesGovernment and Municipal BuildingsWhy Choose LCN Quality?LCN fusible link arms deliver professional-grade fire safety compliance with precision-engineered temperature release mechanisms rated for 165F activation. ADA compliant design ensures accessibility requirements are met while providing reliable automatic door closure during emergency conditions. Engineered for demanding commercial applications where dependable fire safety performance is essential.