Transom Overhead Concealed Door Closer

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
Buy at Amazon.com
  • 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 Back check Delayed action
    2 ≤850mm
    (33-7/16″)    		 ≤70kg
    (154lb)    		 130° Non hold 552 552-BC 552-DA
    Hold at 90° 552H90 552H90-BC 552H90-DA
    Hold at 105° 552H15 552H15-BC 552H15-DA
    3 ≤950mm
    (37-3/8″)    		 ≤105kg
    (231lb)    		 Non hold 553 553-BC 553-DA
    Hold at 90° 553H90 553H90-BC 553H90-DA
    Hold at 105° 553H15 553H15-BC 553H15-DA
    4 ≤1100mm
    (43-5/16″)    		 ≤150kg
    (330lb)    		 Non hold 554 554-BC 554-DA
    Hold at 90° 554H90 554H90-BC 554H90-DA
    Hold at 105° 554H15 554H15-BC 554H15-DA
    Recommended door width: 700mm(27 1/2″) for Size 2, 800mm(31 1/2″) for Size 3, 950mm(37-3/8″) for Size 4.

    Features

    1. Dual speed adjustment
    Two section speed adjustment (130°~10° & 10°~0°). f2
    2. Single or Double action
    Works for both single and double acting doors. f1
    3. Powerful yet compact
    Fits into common header frames. f3

    Standard Components

    Buy at Amazon.com

    Configuration

     

    Download

    Installation Manual for NHN500