Accentra 5821T Grade 1 Cast Iron Door Closer with Thumbturn Hold Open & Stop Arm  

The Accentra 5821T Heavy Duty Door Closer (formerly the Yale 5800 Series) is a high-intent, industrial-grade solution designed for the most demanding commercial environments. Built with a rugged Cast Iron body, this closer provides the ultimate in durability where aluminum alternatives fall short. The 5821T features a specialized Heavy Duty Parallel Rigid Arm with a Thumbturn Hold Open and Removable Stop, offering a physical mechanical "dead stop" to protect the door and frame, combined with a user-controlled hold-open function for maximum facility flexibility.

As an ANSI/BHMA Grade 1 certified hardware solution, the 5821T is a direct retrofit for the LCN 4040, allowing for a seamless, high-strength upgrade to a more cost-effective yet equally robust door control system without the need for additional drilling or modifications.

Elite Mechanical Protection & Industrial Performance

• Rugged Cast Iron Construction: The high-strength cast iron housing offers superior wear resistance and consistent hydraulic performance, even in extreme high-use institutional applications.
  
• Thumbturn Hold Open & Stop Arm: The reinforced rigid arm includes an integrated mechanical stop to prevent over-extension of the door. The manual thumbturn allows staff to easily engage or disengage the hold-open feature for deliveries or high-traffic periods.
  
• Fully Adjustable Spring Power (Sizes 1-6): Provides ultimate versatility. Tune it to a low opening force for ADA accessibility compliance or maximize the power to secure heavy exterior doors against wind and pressure.
  
• Triple Valve Precision Control: Features independent, non-critical adjustment valves to customize Closing Speed, Latching Speed, and Backcheck. The Backcheck valve is critical for cushioning the door during a forceful opening, protecting the internal rack-and-pinion mechanism.
  
• Universal Handing: The non-handed design simplifies the ordering process and job-site installation, fitting both left and right-hand door swings seamlessly.
  
• Professional Aesthetics: Shipped with a full plastic cover that conceals all mounting fasteners and adjustment valves for a clean, tamper-resistant architectural finish.
  

Technical Specifications

Professional Installation & Structural Reliability

The Accentra 5821T is engineered for a permanent, high-strength attachment. To ensure the hardware remains secure on hollow metal or wood doors that experience extreme physical stress or high-frequency use, this unit is shipped standard with sleeve nuts (thru bolts). This "sandwich-style" mounting method provides the structural stability required to prevent the hardware from loosening or pulling through the door over time, ensuring long-term safety and reduced maintenance costs.