Dorex 755AL Door closer, size 5
755ALThe DOREX 700 Series fixed power door closer is recommended by door hardware specialists for use on a wide variety of residential and commercial applications with moderate traffic.
Product Overview
The Dorex 755AL Door Closer (Size 5 Power) is an extra heavy-duty commercial door closer designed for wide, heavy, and high-traffic doors. Built for demanding commercial and industrial environments, this model delivers strong, consistent closing force to ensure reliable latching and long-term durability.
The Aluminum (AL) finish provides a clean, neutral appearance suited to most commercial applications.
Key Features
- Size 5 Spring Power – Maximum closing force for oversized or heavy commercial doors
- Heavy-Duty Rack and Pinion Design – Smooth, controlled door operation
- Adjustable Sweep & Latch Speed – Independent speed control valves
- Surface Mounted Installation – Compatible with wood, hollow metal, and aluminum doors
- Non-Handed Design – Suitable for left- or right-hand installations
- Aluminum Finish (AL) – Standard commercial silver finish
Recommended Applications
- Exterior commercial entrance doors
- Industrial and warehouse facilities
- Institutional buildings
- High-traffic openings
- Wide or oversized doors requiring strong latching force
Technical Specifications (Typical for Size 5 Closers)
- Door Width Range: Typically up to 48" and larger (depending on door weight and site conditions)
- Mounting Type: Standard surface mount (regular arm)
- Material: Cast aluminum body
- Adjustments: Sweep speed and latch speed valves
- Arm Type: Standard arm included
- Finish: Aluminum
When to Choose Size 5
Select a Size 5 closer when:
- The door is wide, heavy, or oversized
- Traffic volume is very high
- Strong, consistent closing force is required
- Smaller spring sizes do not reliably latch the door
The Dorex 755AL provides powerful performance and dependable door control for demanding commercial and industrial environments.
- For moderate traffic applications
- cULus listed
- 5 Year limited warranty
- Fixed power size 1, 2, 3, 4, or 5
- Non-handed
- Cast aluminum alloy body
- Hydraulic rack & pinion mechanism
- Non-gumming, non-freezing hydraulic fluid
- 180° maximum opening
- Adjustable sweep and latching speeds
- Tri-pack for regular, top jamb or parallel arm installations
- Adjustable cushioning backcheck models available
- Drop plates available
Product Page
Instructions
751 – Installation Instructions
752 – Installation Instructions
753 – Installation Instructions
754/755, 784/785 – Installation Instructions
Templates
751 – Regular Arm / Top Jamb
751 – Parallel Arm
752 – Regular Arm / Top Jamb
752 – Parallel Arm
753 – Regular Arm / Top Jamb
753 – Parallel Arm
754/755, 784/785 – Regular Arm / Top Jamb
754/755, 784/785 – Parallel Arm
Disclaimer
- We recommend that physical hardware be ordered and verified before starting any preparation, manufacturing or installation work.
- All product installations must be done by qualified personnel using the proper mounting hardware for the appropriate surface or material.
- We recommend that installers and manufacturers use the instructions inside the packaging provided by the manufacturer, as the manufacturer reserves the right to make technical changes, modify product or information without prior notice.
- Do not exceed the maximum weight or dimensions recommended by the manufacturer.
- All technical documents, drawings and instructions are provided as-is. Customers (primary or secondary) cannot derive any claim based on the use of these documents. No responsibility is or will be assumed.