Dorex 751AL Door closer, size 1 (interior doors)
751ALProduct Overview
The Dorex 751AL Door Closer (Size 1) is designed for light-duty interior commercial doors where controlled closing and reliability are required. It is commonly used in offices, retail spaces, and low-traffic institutional environments.
Key Features
- Size 1 Spring Power – Ideal for lightweight interior doors
- Aluminum Finish (AL) – Clean, neutral appearance for commercial settings
- Adjustable Closing Speed – Separate sweep and latch speed valves
- Rack and Pinion Design – Smooth, consistent performance
- Surface Mounted – Easy installation on wood or hollow metal doors
- Non-Handed – Can be installed on left or right-hand doors
Recommended Applications
- Interior office doors
- Small retail spaces
- Medical or professional offices
- Low-traffic commercial areas
This closer is not intended for heavy exterior doors or high-wind applications.
Technical Specifications (Typical for Size 1 Closers)
- Door Width Range: Typically up to 30"–32" interior doors
- Mounting Options: Regular arm (standard surface mount)
- Material: Cast aluminum body
- Adjustments: Sweep speed and latch speed
- Arm Type: Standard arm included
Why Choose a Size 1 Closer?
Size 1 closers are best when:
- Door weight is light
- Opening frequency is moderate to low
- Interior environmental conditions are stable
- You want smooth, controlled closing without over-powering the door
Features
- 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
Documentation
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.
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