About Ryobi D-4550 Series
Ryobi D-4550 Series
D-4550 Series - High End Industrial Door Closer
- Adjustable closing force 2 through 7
- Two independent closing speed adjustable valves
- Standard/parallel/top jamb/track-rail applications
- For fire door
- Low opening resistance
- Non-handed
- Standard backcheck
- Optional delayed action
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