- All closers shall be DORMA 7300 Series hydraulic surface
applied rack and pinion closers. The closer has two independent
valves to separately control sweep and latch closing
speeds and provide constant speeds when temperatures
change. Standard with backcheck to provide cushioning effect
in opening.
- 7300 Series, fixed spring sizes 2–5.
- Non-handed for regular, top jamb, and parallel arm applications.
- Quick and easy to install.
- Compact design.
- Two noncritical adjusting valves (sweep and latch) work to provide consistent closing speeds under a wide variety of temperatures.
- Adjustable backcheck provides cushioning when the door is abusively opened.
- The 7300 Series is certified to the requirements of ANSI A156.4 Grade 1.
- Available with optional self-drilling screws for steel door and frame applications (DPK86)
- Available with optional self-tapping screws for aluminum door and frame applications (TPK86).
The DORMA 7300 is listed by U.L. and C.U.L. under their reinspection programs. Meets the requirements for UL10C and UBC 7.2 (1997) for positive pressure. California State Fire
Marshall (CSFM) approved.
25 year warranty.