🔧 DRIWON DN-9500 — Supports All Three Mounting Types
Regular arm · Parallel arm · Top-jamb. All necessary hardware included. Free 1–2 day Amazon delivery.
Overview: The Three Standard Mounting Configurations
Regular Arm (Standard)
Closer body mounts on the pull side (top of door). Arm extends to the frame. Maximum swing: typically 110°–120°. Best for standard in-swing interior doors.
Parallel Arm (PA)
Closer body mounts on the push side. Arm runs parallel to door face when closed. Allows 180° swing. Preferred for main entrances and high-traffic push-side doors.
Top-Jamb (TJ)
Closer body mounts on the frame (head jamb), not the door. Used when the door stile is too narrow for body mounting or when the door swings both ways (vestibule).
Regular Arm Mounting: When and How
When to use it: Standard interior doors, corridor doors, and any in-swing door where the closer is on the pull (interior) side. This is the most common configuration for commercial buildings.
Body position: The closer body mounts on the top rail of the door, on the pull face. Use the manufacturer's template — it sets the correct distance from the hinge edge of the door to the closer body pivot point. Getting this distance wrong puts the arm in a bind at certain door positions, creating uneven closing force and accelerating wear.
Maximum door swing: Most regular arm configurations allow 110°–120° maximum swing. If the door needs to swing beyond this — for furniture delivery access or wheelchair maneuverability — specify parallel arm instead.
Hinge side note: For left-hand and right-hand doors, the template has mirror-image positions. Always confirm handing before drilling.
Parallel Arm Mounting: When and How
When to use it: Main building entrances where the closer is on the push side; doors that need to swing 180°; and any application where the arm projecting into the pedestrian path would be a clearance or safety concern.
Body position: The closer body mounts on the push face of the door's top rail. The shoe (the piece that connects the arm to the frame) mounts on the door frame (soffit plate). When the door is fully closed, the arm lies flat — parallel to the door face — making it less visible and less vulnerable to abuse.
Swing advantage: Parallel arm mounting allows the door to swing a full 180° against the wall, which is required for some ADA alcove configurations and for any door that needs to be held completely flat against the adjacent wall.
Note on spring strength: Parallel arm mounting provides slightly less mechanical leverage than regular arm — the closer's spring must work against a less favorable geometry. For heavy doors, size up one spring size (e.g., from size 4 to size 5) when switching from regular to parallel arm.
Top-Jamb Mounting: When and How
When to use it: Narrow stile doors (aluminum storefronts, glass doors) where the top rail is too thin to carry the closer body; vestibule doors with narrow frames; and any application where the door-mounted body position would interfere with glazing or decorative panels.
Body position: The closer body mounts on the head jamb (top of the door frame), not on the door itself. The arm pivots from the frame body to a shoe on the door. Because the body is stationary on the frame, there is no risk of loosening due to door vibration.
Important limitation: Top-jamb mounting reverses the arm geometry — verify with the manufacturer that the closer model supports top-jamb installation and that the arm supplied is the correct type. Not all closer models are approved for top-jamb use in their standard configuration.
Mounting Configuration Comparison
| Feature | Regular Arm | Parallel Arm | Top-Jamb |
|---|---|---|---|
| Closer body location | Pull side of door | Push side of door | Head frame (jamb) |
| Max door swing | 110°–120° | Up to 180° | Depends on model |
| Arm visibility | Visible on pull side | Low profile, flush when closed | On frame, minimal |
| Best for | Standard interior doors | Entrances, push-side, aesthetics | Narrow stile, glass doors |
| Spring size adjustment | As specified | +1 size for heavy doors | Per manufacturer guidance |
Using the Installation Template
Every DRIWON DN-9500 ships with a paper installation template. This template is not optional — it is the most important tool in the installation process. The template sets the exact position of the closer body relative to the hinge edge of the door, and the exact position of the shoe or bracket on the frame. Mounting without the template, even by an experienced installer, risks a geometry error that will show up as uneven closing force or arm binding at certain door positions.
Tape the template to the door (or frame for top-jamb), mark all drill points, remove the template, and drill. Verify all holes are clean and correctly positioned before attaching the closer body.
📦 DN-9500 Ships with Complete Installation Kit
Template, mounting screws, arm hardware, and instruction sheet included. Free 1–2 day Prime delivery.
Mounting Scenarios by Building Type
Door Closer Mounting FAQ
What is the difference between regular arm and parallel arm mounting?
Regular arm puts the closer on the pull side with the arm projecting from the door. Parallel arm puts it on the push side with the arm lying along the door when closed, allowing a wider swing and less exposure to abuse.
Do I need a bigger closer for parallel arm mounting?
Often yes. Parallel arm has less leverage, so size up one level for heavy doors.
When should I use top-jamb mounting?
When the door top rail is too narrow for the closer body, such as narrow stile glass storefronts, or when the body would conflict with glazing.
Which mounting is best for exposed or windy doors?
Parallel arm on the inside face keeps the arm out of the weather. Add backcheck and size up. See our parking garage page.
Does the DN-8220 include a parallel arm bracket?
Yes. The DN-8220 includes mounting screws and a parallel arm bracket.