Common Types of Fire Rated Mortise Lock and Their Applications

Mortise door locks are an essential component of any building's security system due to their sturdy construction and reliable fire rated features. Many people have trouble choosing a lock with the right functionality.

As a professional door hardware manufacturer, we can provide you with corresponding solutions and a suitable set of mortise locks according to your different application scenarios and requirements. Just tell us your requirements, we can provide you with the applicable solutions and supporting products.

In this article, We will take a closer look at each type of mortise door lock, and each one will be expanded in three points:

1. Function, 2. Main Structure, 3. Application.

The lock bodies available in the market are Profile cylinder mortise lock, Mute mortise lock, Mortise deadbolt lock, Night latch mortise door lock, Passage mortise door lock, Escape mortise door lock, Bathroom mortise door lock, Classroom mortise door lock, and Roller bolt mortise door lock.

All the mortise locks comply with European standard EN12209, dimensions comply with DIN18251, conform to CE regulations.

Entrance Mortise Door Lock

Entrance mortise door lock is the most commonly utilized lock in project construction and can be used on a diverse range of fire-rated doors.

1. Function

Entrance mortise door lock can be operated by the cylinder both sides of the door, available both double open profile cylinder and thumb turn profile cylinder. One of the significant benefits of entrance mortise locks is that they can be easily locked or unlocked by using a key.

2. Main Structure

Forend:   SS304, thickness 3mm

Latch bolt:   SS304, projection 12mm

Deadbolt:   SS304, projection 20.5mm, 2 throws

Follower:   SS304, 8*8mm

Perforation for cylinder:   Euro profile 33*17*10mm

3. Application

This type of mortise lock is typically used in buildings where fire resistance is a critical concern, such as hospitals, schools, and public buildings.

Mute Mortise Lock

Mute mortise lock, our newly designed latch is capable of reducing noise when closing the door, while maintaining the same performance as a entrance mortise lock.

1. Function

The mute latch is molded from stainless steel and POM plastic to ensure robustness and durability, also remains silent when the door being closed. By changing the internal spring structure, this mute mortise door lock can reduce the vibration of the door by about five times per closing, which can reduce the closing noise effectively.

At the same time, the latch bolt is internal reversing, which can be reversed without the help of reversing device, which is more convenient.  

2. Main Structure

Forend:   SS304, thickness 3mm

Latch bolt:   SS304+POM, projection 12mm, Internal reversing

Deadbolt:   SS304, projection 20.5mm, 2 throws

Follower:   SS304, 8*8mm

Perforation for cylinder:   Euro profile 33*17*10mm

3. Application

Mute mortise lock suitable for hospital wards and other need quiet occasions.

Mortise Deadbolt Lock

One of the most popular types of mortise door locks is the deadbolt mortise door lock.

1. Function

Deadbolt mortise door lock has a deadbolt that is manually operated with cylinder. The deadbolt extends from the lock into the door frame when the door is locked by cylinder.

The mortise deadbolt locks are available in both single open cylinder and double open cylinder configurations. Deadbolt mortise door lock can be locked from both the inside and outside.

2. Main Structure

Forend:   SS304, thickness 3mm

Deadbolt:   SS304, projection 20.5mm, 2 throws

Perforation for cylinder:   Euro profile 33*17*10mm

3. Application

These mortise deadbolt locks are commonly used in areas where people rarely enter, such as storeroom and warehouse.

We also provide the small one of the deadbolt mortise lock for your choice.

Passage Mortise Door Lock

The Passage mortise door lock is specifically designed for high-traffic areas that require secure closure when unoccupied.

1. Function

The passage mortise door lock has a latch that reach into the door frame when the door is closed. The latch can be operated from both sides of the door with a lever handle.

These locks do not need a key and are designed to keep the door closed but easy to operate when we need to open the door.

2. Main Structure

Forend:   SS304, thickness 3mm

Latch bolt:   SS304, projection 12mm

Follower:   SS304, 8*8mm

3. Application

Passage mortise locks are commonly used on doors between rooms or hallways and are often used in public buildings.

We also provide the small one of the Passage mortise lock for your choice.

Night Latch Mortise Door Lock

1. Function

The night latch mortise lock comes with a latch and a safety latch. The lock is operated by using a key from the outside and a lever handle from the inside. It is designed to be easy to operate from the inside, but difficult to pick from the outside.

When the door is closed, it can only be opened from the outside with a key, but can be opened from the inside with a lever handle. Therefore, night latch mortise locks are typically used in conjunction with an interior lever handle, an exterior knob, and a half-profile cylinder.

2. Main Structure

Forend:   SS304, thickness 3mm

Latch bolt:   SS304, projection 12mm

Safety latch:   SS304, thickness 2.8mm

Follower:   SS304, 8*8mm

Perforation for cylinder:   Euro profile 33*17*10mm

3. Application

Night mortise locks are suitable for locations that require privacy and minimal disturbance to the room's occupants.

Escape Mortise Door Lock

The escape mortise lock is designed to provide an easy exit in case of an emergency.

1. Function

It features a lever handle that can be easily pushed down to release both the latch and deadbolt at the same time, allowing the door to be opened quickly even if it is locked. This can reduce the time required for people to evacuate during emergencies, potentially saving lives.

The escape mortise lock is commonly paired with a Grade 4 lever handle and a euro profile cylinder for optimal performance.

2. Main Structure

Forend:   SS304, thickness 3mm

Latch bolt:   SS304, projection 12mm, Internal reversing

Deadbolt:   SS304, projection 20.5mm, 1 throw

Follower:   SS304, 8*8mm

Perforation for cylinder:   Euro profile 33*17*10mm

3. Application

Escape mortise door lock is typically used in buildings where fire resistance is a major concern, such as hotels and hospitals.

Classroom Mortise Door Lock

Classroom mortise locks are commonly used in educational institutions.

1. Function

The classroom lock concentrates two functions:

When the door is locked from the inside with a key, the door cannot be opened by lever handle outside. This function is tamper-proof and is designed to prevent people from leaving or entering the classroom without permission.

When the door is unlocked, it becomes a keyless entry system and can be ease of access such as a passage mortise lock.

2. Main Structure

Forend:   SS304, thickness 3mm

Latch bolt:   SS304, projection 12mm

Safety latch:   SS304, thickness 5.9mm

Follower:   SS304, 8*8mm

Perforation for cylinder:   Euro profile 33*17*10mm

3. Application

Classroom mortise lock is commonly found in schools and universities.

Bathroom Mortise Door Lock

The bathroom mortise door lock is designed for privacy and is commonly used on bathroom doors.

1. Function

Bathroom mortise door lock features a deadbolt that operated by a thumb turn on the inside, which can be easily operated to lock or unlock the door. And an indicator on the outside to show if the room is being used.

These locks feature a privacy function that activates when the indicator turns red, effectively preventing unauthorized entry while the room is in use.

2. Main Structure

Forend:   SS304, thickness 3mm

Latch bolt:   SS304, projection 12mm

Deadbolt:   SS304, projection 20.5mm, 1 throw

Latch Follower:   SS304, 8*8mm

Thumb turn Follower:   SS304, 5*5/8*8mm

3. Application

Bathroom mortise lock is often applied to bathroom doors in public places to protect people's privacy when they go to the bathroom.

Roller Bolt Mortise Door Lock

A roller bolt mortise door lock is a type of lock that features a roller bolt extends into the door frame.

1. Function

The roller bolt mortise door lock is operated by using a key from the outside and a knob from the inside. The roller bolt mortise lock is designed to be easy to close.

2. Main Structure

Forend:   SS304, thickness 3mm

Roller bolt:   SS304

Deadbolt:   SS304, projection 20.5mm, 2 throws

Perforation for cylinder:   Euro profile 33*17*10mm

3. Application

It is commonly used on doors in buildings with high traffic, such as bathroom in public buildings.

Conclusion

Fire rated Mortise door locks are an essential component of any building's fireproof system. They need a wide range of configurations, each with its own unique features and functions. It is essential to choose the right type of mortise door lock based on the specific requirements to ensure that it provides the required level of fire rated, privacy, and safety.

These mortise locks is also fire-rated and often used in conjunction with a fire rated lever handle and Euro profile cylinder, providing a high level of fire safety. It is tested and certified to withstand fire for a specified period of time. The mortise lock pass fire resistance test according to EN1634, which is 90mins on timber doors, 240mins on steel doors.

Our mortise door locks come in different types of lock bodies, each designed to serve a specific function. Welcome to choose different functions of the lock body from our factory.

To know more information of mortise door locks → click here.