Design by Selzer, LLC

Design by Selzer, LLC

Design by Selzer, LLCDesign by Selzer, LLCDesign by Selzer, LLC

Providing products to the Fire Service since 2002



The Firefighter Wedge - Designed and patented by a firefighter


Select the best method of holding the door after analyzing the door for weight, size, style and if the door has a self closer. Practice using the wedges on a variety of door types and positions to determine the best option for the desired result.

 - FFWEDGE is durable, lightweight and will hold open a variety of door types

- Deployment System allows for easy deployment and placement of wedges when wearing gloves

- Wedges can be placed at the top between the door and frame, on the hinge side between the door and frame,  or under the door below the knob or handle
- Unique interlocking design allows for wedges to be placed in tandem vertically and horizontally between the door and frame, or under the door as a larger wedge   

-  Wedges can be hung from a door knob, lever or handle to be used as a room search indicator

-  Optional reflective decals make them easy to see with a flashlight in low visibility conditions.  



Individual Wedges


Wedges are available in black or yellow, with or without black, yellow or AWOGS reflective decals.




The TAC-2PK is for use in tactical operations or on the fire ground where doors need to be held open at various positions. The wedges are available in black with or without black reflective decals. The two wedges give emergency services personnel the ability to use in an interlocking configuration.


4 Wedge Deployment System


The Deployment System is available with black or yellow wedges, with black, yellow or AWOGS reflective decals or no decals. The system provides 4 easy access wedges.


Product Specifications


Wedge material

· 33% glass fiber reinforced  66 nylon resin

Wedge colors

· Black

· Yellow

Available Decal colors

3M black reflective

3M yellow reflective

AWOGS reflective and fluorescent

Wedge size

5 ¼” long, 2” high and 1” wide

Wedge weight

2 ¼ ounces

Tensile strength

29,000 psi

Flexion strength

39,900 psi

Melting temperature 

545 F


3mm braided nylon

Deployment System - items need assembly

(1) Carabiner

3” Aluminum – not intended for climbing or rescue operations

(4) Retention Clips

Stainless steel with a 6-8 pound pull release

(4) Wedges with or without reflective decals with lanyards



Deployment System

Placing the Lanyard in the Retention Clip

Placing the Lanyard in the Retention Clip



Here is the link to Captain Dale Pekel's YouTube video for the Firefighter Wedge and Deployment System. This video demonstrates the applications, use and durability of the  product line.:

Placing the Lanyard in the Retention Clip

Placing the Lanyard in the Retention Clip

Placing the Lanyard in the Retention Clip


Flow Path Control

Use in controlling a door opening flow path

If a firefighter is not available to control the flow path, the door can be wedged in a partially open/closed position as shown above depending on door type and floor surface friction



The Fire store


W.S. Darley


Box Alarm Training


Email Contact Information

William Selzer at Design by Selzer, LLC

Wedge Applications


Wedge Placement


The FF WEDGE™ provides firelighter's a lightweight, strong and durable tool that can hold open a variety of swinging door styles and sizes, i.e. residential/ commercial/Industrial, wood and metal doors with different hinge types, for example; standard, continuous and pivoting. The interlocking notch design assists in keeping the FF WEDGE™ in place when positioned under a door, between the door and frame or in tandem. These wedges can be easily deployed and placed while wearing gloves and may be stored in a turnout pocket, held in a helmet band or hung from a truck belt by the Wedge Deployment System. The attached lanyard allows for the hanging of wedges from doorknobs and levers, while the visibility enhancing 3M™ or AWOGS reflective decals assist firelighters in quickly locating wedges that have been placed as room search indicators. The decals are available in three colors, reflective black, yellow and AWOGS.

Wedge placement Information 

The FFWEDGE with its interlocking notch design can be placed in a variety of positions giving personnel more options. Before placing a wedge, we suggest you first evaluate conditions and placement options for optimal wedge effectiveness, i.e. door size, weight, material, closers, floor and frame conditions, etc. The following are some helpful hints for use and placement.

Placement options for doors with or without self-closers:

1. Place the wedge at the top of the door, between the door hinge-end and the head of the door frame, if a space exists. Wedge placement in this manner will hold the door open at approximately 90 degrees. Place the point of the wedge down. This assists in keeping the wedge in place if the door is bumped or opened wider.

2. Place the wedge between the door and the door frame above or below the hinges. The door will be held open, depending on placement, slightly less than 90 degrees. If the door is heavy or the closer is strong, it is suggested to place two or more wedges as described above. If the space for placement is too large for one wedge, use two or more interlocked to form a larger wedge.

Another option for between the door and the door frame is to interlock two wedges to form a rectangle. This block can be placed between the vertical hinge edge end of the door and the vertical doorstop on the frame. Adjust the two wedges by changing the interlocking position to maximize the open position of the door. This can also be accomplished in a horizontal block orientation in the same position for pivoting doors and doors with a wider gap between the door hinge edge and the frame when the door is in the open position.

3. Place the wedge under the door's bottom edge below the knob or handle, depending if the friction between the door and floor is sufficient to hold the door open. While stabilizing the wedge pull the door up and towards the wedge, snapping the bottom door edge in the highest wedge notch possible. This works best on wood and lightweight metal doors on carpeted floors. 

Aluminum and hollow metal doors usually have an outer surface bottom edges with a recessed center section. This can be felt by running your hand under the door. To place a wedge, line up a wedge notch with the edge and slide the wedge under the door from the latch end along this edge towards the hinge until it wedges between the door and the floor/slab. This works well for exterior doors where the slab pitches away from the building. Many times floors are not completely level, so this method can also be tried on interior metal doors. With this method the door can be held open beyond 90 degrees depending on hinges, frame type and obstacles.

Gas shut off

· Use the opening between the wedge interlocking surfaces

Room search indicator

· Hang on a door knob, lever or handle

For placing the Lanyard in the retention clip see the video page