Ryobi D4550 Tri-Pack Delayed Action Heavy Duty Door Closer

The Ryobi D-4550DA Tri-Pack Delayed Action Door Closer is a premium-grade, heavy-duty commercial door closer designed for facilities that demand maximum durability, smooth operation, and controlled accessibility. Featuring integrated delayed-action technology, this closer allows the door to remain open momentarily before initiating the closing cycle—making it an excellent choice for ADA-compliant environments, healthcare settings, and buildings serving the elderly or disabled.

Engineered from R14 high-silicon aluminum alloy, the D-4550DA offers superior resistance to wear, corrosion, and fluid contamination, ensuring a long maintenance-free service life. The Tri-Pack configuration provides everything needed for Regular Arm, Top-Jamb, and Parallel Arm installations, giving installers flexibility in the field.

Key Features & Benefits

• Integrated Delayed Action Valve: Keeps the door open for a pre-set period before closing—ideal for wheelchairs, carts, and high-accessibility zones.

• Power Adjustable Size 1–6 (+50%): Suitable for a wide range of door weights and sizes, up to 60" wide and 440 lbs.

• Full Hydraulic Control: Independent, fine-tuned adjustments for:

  • Closing speed

  • Latching speed

  • Backcheck resistance

  • Delayed-action timing

• Non-Handed Design: Simplifies stocking and installation for both right- and left-hand doors.

• Heavy-Duty Forged Steel Arms: Durable, interchangeable, and compatible with optional arms like EDA, Hold-Open, Stop, and Track-Rail.

• All-Weather Hydraulic Fluid: Functions smoothly across wide temperature ranges—no seasonal adjustments required.

Certifications & Compliance

• ANSI/BHMA A156.4 Grade 1 Certified – Rated for over 2 million cycles of high-traffic commercial use.

• UL/cUL Listed to UL 228 & UL 10C – Fire-rated for use on self-closing fire doors.

Ideal Applications

• ADA-compliant commercial doors

• Hospitals and assisted living facilities

• Schools, universities, and dormitories

• Airports, transit stations, and hotels

• Government and public buildings

• Office buildings and retail entrances

Specifications

• Mounting Options: Tri-Pack (Regular, Top-Jamb, Parallel Arm included)

• Max Door Width: 60" (interior), 48" (exterior)

• Max Door Weight: 330–440 lbs

• Finish: Painted Plastic-Black

• Warranty: 25-Year Limited Manufacturer’s Warranty