NHN® 500 Series
Transom Overhead Concealed Door Closer
The NHN500 is a commercial grade transom overhead concealed door closer designed to be mounted inside the header frame/jamb so that keeps the aesthetic door appearance, ideal for the commercial entrance where surface-mount type closers are not suitable or would interfere architectural design.
Catalog – Transom Overhead Concealed Door Closer NHN500
- Works for both single acting and double acting doors.
- Spring size: 2, 3 or 4
- Non handed, suitable for left and right hand doors.
- Available with or without hold open. (Hold-open; choice of 90° or 105°.)
- Back-check model (between 130° to 70°) available.
- Delayed action model (between 130° to 65°) available.
|Spring size (EN)||Door width||Door weight||Opening angle||Hold open|
or Non hold
| Model No.|
|130°||Hold at 90°||552H90||552H90-BC||552H90-DA|
|130°||Hold at 105°||552H15||552H15-BC||552H15-DA|
|130°||Hold at 90°||553H90||553H90-BC||553H90-DA|
|130°||Hold at 105°||553H15||553H15-BC||553H15-DA|
|130°||Hold at 90°||554H90||554H90-BC||554H90-DA|
|130°||Hold at 105°||554H15||554H15-BC||554H15-DA|
1. Dual speed adjustment
Two section speed adjustment (130°~10° & 10°~0°).
2. Single or Double action
Works for both single and double acting doors.
3. Powerful yet compact
Fits into common header frames.