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.
Selection Chart
| Spring size (EN) | Door width | Door weight | Opening angle | Hold open or Non hold | Model No. Standard | Model No. Back check | Model No. Delayed action |
|---|---|---|---|---|---|---|---|
| 2 | ≤850mm (33-7/16″) | ≤70kg (154lb) | 130° | Non hold | 552 | 552-BC | 552-DA |
| 2 | ≤850mm (33-7/16″) | ≤70kg (154lb) | 130° | Hold at 90° | 552H90 | 552H90-BC | 552H90-DA |
| 2 | ≤850mm (33-7/16″) | ≤70kg (154lb) | 130° | Hold at 105° | 552H15 | 552H15-BC | 552H15-DA |
| 3 | ≤950mm (37-3/8″) | ≤105kg (231lb) | 130° | Non hold | 553 | 553-BC | 553-DA |
| 3 | ≤950mm (37-3/8″) | ≤105kg (231lb) | 130° | Hold at 90° | 553H90 | 553H90-BC | 553H90-DA |
| 3 | ≤950mm (37-3/8″) | ≤105kg (231lb) | 130° | Hold at 105° | 553H15 | 553H15-BC | 553H15-DA |
| 4 | ≤1100mm (43-5/16″) | ≤150kg (330lb) | 130° | Non hold | 554 | 554-BC | 554-DA |
| 4 | ≤1100mm (43-5/16″) | ≤150kg (330lb) | 130° | Hold at 90° | 554H90 | 554H90-BC | 554H90-DA |
| 4 | ≤1100mm (43-5/16″) | ≤150kg (330lb) | 130° | Hold at 105° | 554H15 | 554H15-BC | 554H15-DA |
Features
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.
Standard Components
Configuration
