What are the different types of flush bolts?

### Types of Flush Bolts.

Flush bolts are essential hardware for securing double doors in place by fastening the inactive door panel to the door frame. There are several types of flush bolts used for different applications and door sizes. Here are the most common types:

#### Manual Flush Bolts.

Manual flush bolts are the most traditional type of flush bolts and are operated by manually turning a thumbturn or knob. They are simple to install and use, making them a popular choice for residential and commercial doors.

To install a manual flush bolt, first, mark the desired location on the inactive door for the flush bolt. Then, use a drill to create holes for the bolt mechanism and strike plate. Attach the flush bolt to the door using the provided screws and adjust the strike plate as needed for a secure fit.

#### Automatic Flush Bolts.

Automatic flush bolts are a step up from manual flush bolts as they feature a more convenient operation. These flush bolts automatically extend when the active door is closed and retract when the door is opened.

Installing automatic flush bolts follows a similar process to manual flush bolts, with the addition of ensuring the mechanism is properly aligned for automatic operation. Adjustments may be needed to ensure smooth operation and a secure latch.

#### Concealed Flush Bolts.

Concealed flush bolts are designed to be hidden within the door panel for a seamless appearance. These flush bolts are ideal for modern or minimalist door designs where visible hardware is undesirable.

To install concealed flush bolts, special care must be taken to recess the hardware into the door panel to achieve a flush finish. Proper alignment and adjustment are crucial for concealed flush bolts to function correctly.

#### Mortise Flush Bolts.

Mortise flush bolts are installed within the edge of the door, providing a sleek and integrated look. These flush bolts are commonly used in high-end residential and commercial applications for a refined aesthetic.

Installing mortise flush bolts requires precise measurements and cutting of the door edge to accommodate the mortise housing. Proper alignment and installation are essential for smooth operation and a secure latch.

In conclusion, flush bolts come in various types to suit different door styles and requirements. Whether you choose manual, automatic, concealed, or mortise flush bolts, proper installation and adjustment are key to ensuring functionality and security for your double doors.

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