Commercial Door Closer Mounting Plate | Top Jamb Application | For Prime 46 Series Closers | Retrofit & Limited Frame-Face Installations

Expand installation options for the Prime Door Controls 46 Series commercial door closer with the 46 Series Top Jamb Drop Plate.

Designed for compatible top jamb closer installations, this mounting plate provides an alternate mounting surface when the frame face does not provide sufficient space to mount the closer body directly.

It is especially useful for narrow frame heads, aluminum storefront frames, retrofit installations, and other commercial openings requiring additional mounting clearance.

Key Features

• Designed for Prime Door Controls 46 Series door closers

• Top jamb drop plate

• Designed for compatible top jamb closer installations

• Provides an alternate mounting surface for the closer body

• Ideal for limited frame-face mounting conditions

• Useful for narrow commercial door frames

• Helps accommodate existing hardware conflicts

• Excellent for retrofit and replacement installations

• Commercial-grade closer accessory

• Suitable for hollow metal and compatible aluminum frames

• Designed for commercial and institutional openings

Top Jamb Application

In a top jamb installation, the closer body is mounted on the frame head above the door, typically on the push side of the opening.

This configuration is commonly used where the door itself does not provide the preferred mounting surface for the closer body.

Top jamb installations are often found on:

• Commercial exterior doors

• Aluminum storefront entrances

• Hollow metal frames

• Narrow top-rail doors

• High-traffic commercial openings

Why Use a Top Jamb Drop Plate?

A drop plate provides additional mounting flexibility when the available frame face is too narrow or otherwise unsuitable for direct closer installation.

Typical applications include:

• Limited frame-head mounting space

• Narrow frame faces

• Aluminum storefront frames

• Existing closer preparation conflicts

• Previous mounting holes

• Retrofit door closer installations

• Architectural conditions that prevent standard mounting

The plate provides a secure mounting surface while maintaining the required top jamb closer configuration.

Designed for the Prime 46 Series

The Prime Door Controls 46 Series is a heavy-duty commercial surface closer designed for demanding openings.

The closer platform features:

• ANSI Grade 1 construction

• Adjustable spring power Size 1–6

• Adjustable sweep speed

• Adjustable latch speed

• Adjustable backcheck

• Non-handed operation

• Surface-mounted design

This top jamb drop plate is intended as a mounting accessory for compatible 46 Series installations.

Product Specifications

Brand: Prime Door Controls
Series: 46 Series
Product Type: Door Closer Drop Plate
Configuration: Top Jamb
Compatible Closer: Prime Door Controls 46 Series
Function: Closer Mounting / Adapter Plate
Mounting Location: Frame Head / Top Jamb
Application: Commercial / Institutional
Use: New Installation / Retrofit / Replacement

Common Applications

Ideal for:

• Hollow metal frames

• Aluminum storefront frames

• Commercial wood doors

• Exterior commercial doors

• Office buildings

• Retail stores

• Schools and universities

• Hospitals and healthcare facilities

• Government facilities

• Warehouses

• Manufacturing facilities

• Institutional buildings

• Commercial entrances

Retrofit Applications

The 46 Series Top Jamb Drop Plate is especially useful when replacing an existing closer where:

• Existing mounting holes do not match

• Frame-face space is limited

• The closer must be mounted lower or repositioned

• Existing hardware interferes with standard mounting

• A top jamb installation is required

This can provide a cleaner installation while reducing unnecessary modification to the frame.

Installation Notes

Before ordering, verify:

• Prime Door Controls 46 Series compatibility

• Required top jamb mounting configuration

• Frame-face dimensions

• Door and frame construction

• Existing closer preparation

• Arm configuration

• Door swing

• Available mounting clearance

• Required finish

Always use the appropriate Prime 46 Series installation template when locating the drop plate and closer.

Important Compatibility Note

This listing is for the Top Jamb Drop Plate only.

It does not include the closer body, closer arm, or additional mounting accessories unless specifically stated.

Verify the required plate and mounting configuration before ordering.

What's Included

(1) Prime Door Controls 46 Series Top Jamb Drop Plate

Door closer, arm, cover, brackets, mounting screws, door, frame, and other accessories are sold separately unless specifically stated otherwise.