BEST SL6000 Series Grade 1 Surface Mounted Door Closer with Adjustable Spring Sizes

BEST SL6000 Series Grade 1 Surface Mounted Door Closer with Adjustable Spring Sizes

Professional Hydraulic Door Control Solution

The BEST SL6000 Series surface door closer delivers Grade 1 certified performance with adjustable spring sizes 1-4 and 3-6 for versatile commercial applications. Constructed with DIN 226 aluminum alloys for maximum protection against metal fatigue and abrasion, this hydraulic closer features adjustable backcheck standard and meets ANSI/BHMA A156.4 Grade 1 certification. The compact design accommodates 1-3/4" thick doors and is backed by an industry-leading 30-year warranty.

Professional Features & Benefits

• Adjustable Spring Sizing: Available with spring sizes 1-4 and 3-6 to accommodate varying door weights and application requirements for optimal performance.
• Grade 1 Certification: ANSI/BHMA A156.4 Grade 1 certified with UL and CUL listings for demanding commercial applications and code compliance.
• Heavy-Duty Construction: DIN 226 aluminum alloys provide maximum protection against metal fatigue and abrasion for long-term reliability in high-traffic environments.
• Adjustable Backcheck Standard: Provides cushioning when doors are abusively opened, protecting door and frame while controlling abrupt opening movements.
• Barrier-Free Compliance: Meets 5 lb interior barrier-free applications (SL6014 model) and ADA requirements for accessible door operation.
• Thermostatic Valve Control: Two noncritical adjusting valves (sweep and latch) with thermostatic properties provide consistent closing speeds under wide temperature variations.
• Optional Delayed Action: Available delayed action valve delays door closing from maximum opening with adjustable delay time for enhanced accessibility.
• Manufacturer Warranty: Industry-leading 30-year warranty for added confidence and long-term protection in commercial installations.

Technical Specifications

• Commercial/Residential: Commercial
• Delay Function: Yes
• Department: Door Hardware
• Duty Level: Light Duty
• Fasteners: Self-Drilling, Self-Tapping, Thru Bolts 1-3/4" Door With Machine Screws
• Function Description: Electrically Locked
• Grade: Grade 1
• Product Category: Door Controls
• Product Group: Door Controls
• Product Subgroup: Door Closers - Surface Mounted
• Product Type: Surface Mounted Door Closers
• Series: SL6000 Series
• Subcategory: Surface Mounted

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness compatibility with 1-3/4" doors and mounting surface adequacy.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces, or utilize SL640C mounting bracket for 9-1/16" template hole pattern installations.
3. Prepare door and frame by drilling required holes using provided self-drilling and self-tapping fasteners or machine screws as specified for the application.
4. Install all mounting hardware and secure the closer to door and frame per manufacturer torque specifications using appropriate fastener type for door construction.
5. Adjust spring power using Allen head adjustment and configure sweep and latch valve settings for desired closing speed and backcheck operation.
6. Test closer operation to verify proper function including backcheck cushioning, closing speed consistency, and delayed action timing if equipped. Refer to manufacturer documentation for complete installation details and valve adjustment procedures.

Professional Applications

• Educational Facilities and Universities
• Healthcare Institutions and Medical Centers
• Government Offices and Municipal Buildings
• Transportation Facilities and Airports
• Commercial Office Buildings
• High-Traffic Public Buildings
• Barrier-Free Accessibility Applications

Delayed Action Functionality

Optional delayed action valve provides adjustable delay timing to delay door closing from maximum opening position. This feature allows extra time for passage through the opening, enhancing accessibility compliance while maintaining automatic door closing for security and HVAC efficiency.

Why Choose BEST Quality?

BEST SL6000 Series door closers deliver professional-grade reliability with DIN 226 aluminum alloy construction and Grade 1 certification for demanding commercial applications. The industry-leading 30-year warranty and all-weather hydraulic fluid formulation ensure minimal maintenance requirements and consistent performance. Engineered for high-traffic environments where dependable door control, safety protection, and barrier-free compliance are essential.