Jun 25, 2018
Overhead Door Stop

Overhead door stops are installed at the top of the door and an arm is attached to the frame. Overhead stops can be surface mounted to the face of the door or they can be concealed in the head of the door. The arm slides along a track or rod and when it comes to the end of the track it will stop against a bumper or spring built in the...

Jun 18, 2018
Full Size IC Core (FSIC) and Small Format IC Core (SFIC)

Interchangeable cores for locks were invented to allow for quick keying and re-keying of locks. There are two styles of interchangeable cores, the Small Format Interchangeable Core (SFIC) and the Full Size Interchangeable Core (FSIC). Both are recognizable by their figure 8 shape. The SFIC cores are smaller than the FSIC cores.The...

Jun 11, 2018
rotary slicing

Wood veneers for commercial wood doors come in various cuts that provide different finished appearances. Some species of wood can be cut in certain ways for better results. This brief post will look at the 4 most common cutting options used for wood door veneers. These are the 4 cutting options: Plain Slicing Quarter Slicing ...

Jun 4, 2018
classroom door security

Life safety and security are important factors for any building or space. Classroom security in schools has been in the spotlight in recent years as we see tragic events taking place across the country that concern educators, parents, children, first responders, government leaders, as well as builders. The common goal we all have is to...

May 29, 2018
wood door core with lock

Wood door cores are central to the door's performance and durability. Each core type has benefits and specific applications where they are recommended or even required to be used. The core type can also greatly affect the cost of the wood doors on your project. We'll briefly cover each core type and talk about some of their...

May 21, 2018
4 common hollow metal frame profiles

Hollow metal frames are shaped from flat steel sheets of different thicknesses to form what is called a "profile". Depending on the manufacturer, there are many profiles that can be formed. For most openings, however, there are a set of common hollow metal frame profiles that can be used. What are they and what are their...

May 14, 2018
Door Closer Control Zones

Commercial door closers are used to control an opening when the door is being opened and while the door is closing. The different types of closers may have standard controls as well as optional ones that can be added at the factory. In this blog post we'll cover the 4 most common door closer control "zones" used in the swing of a door....

May 7, 2018
Pairs of Doors

Double doors are often used at front entrances to buildings as well as for storage closets, conference room entrances, and openings to other large spaces. Double doors include two door panels in the frame that may or may not be separated by a vertical mullion. Each door leaf may be equal in width (called an equal pair) or they may have...

Apr 30, 2018
Von Duprin Exit Devices

When we refer to dogging an exit device it means holding the latching mechanism retracted. There are several methods to "dog" an exit device, but they can be divided into two groups: Mechanical dogging and Electrified Dogging. The level of security that is wanted at the opening is one of the main factors to determine which method of...

Apr 23, 2018
Installed Conventional Hinge

Door hinges are the most important part on any swinging commercial door. Without hinges to hang on, the door will not swing. Conventional hinges (often called butt hinges) come in a variety of sizes and with many options to meet the conditions at an opening. A conventional hinge is essentially two metal plates that are joined together...


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