what is a rim exit device

3 min read 26-12-2024

Meta Description: Unlock the secrets of rim exit devices! This comprehensive guide explains what they are, how they work, their applications, and the key factors to consider when choosing one. Learn about different types, features, and installation tips for optimal security and accessibility. Discover why rim exit devices are crucial for commercial buildings and high-traffic areas.

Understanding Rim Exit Devices

A rim exit device is a type of door hardware specifically designed for emergency exits. It's a crucial component for ensuring safe and quick evacuation in commercial buildings, schools, and other high-occupancy spaces. Unlike mortise exit devices which are installed within the door, rim exit devices are mounted directly onto the door's surface. This makes them easier and faster to install, a significant advantage in many situations.

How Rim Exit Devices Work

Rim exit devices operate using a simple yet effective mechanism. A push-bar or panic bar is the primary component. Pushing this bar activates the latch bolt retraction mechanism, allowing the door to swing open freely. This design facilitates quick egress during emergencies. The straightforward operation is crucial in panic situations, where speed and ease of use are paramount.

Types of Rim Exit Devices

Several types of rim exit devices cater to diverse needs and building codes. Understanding these variations is crucial for making the right choice for your specific application.

1. Push-Bar Rim Exit Devices:

These are the most common type. They feature a horizontal push bar across the door's surface. These are often used in standard exits.

2. Push-Pad Rim Exit Devices:

Instead of a bar, these devices use a large, flat push pad, which is ideal for spaces with limited door clearance or where a more discreet design is preferred.

3. Rim Exit Devices with Electric Locking:

These incorporate electric strikes or magnetic locks that can be controlled remotely. This offers increased security and access control, but requires additional wiring and integration. This is particularly valuable where after-hours security is a concern.

Key Features to Consider

Choosing the right rim exit device involves careful consideration of several key features:

Material: Stainless steel is popular for its durability and corrosion resistance. Other materials, such as aluminum, might be more cost-effective.
Finish: A variety of finishes, from polished chrome to brushed nickel, can match existing door hardware. Choosing a durable finish is essential for longevity.
Latching Mechanism: Rim exit devices use different latching mechanisms, such as deadbolt or surface bolts. These affect the security level and the door's overall performance.
Accessibility Compliance: Ensure the chosen device complies with ADA (Americans with Disabilities Act) guidelines for ease of use by people with disabilities. This includes proper push bar height and force requirements.
Durability and Longevity: Consider factors like material quality and the device's overall construction. A high-quality rim exit device can withstand frequent use and maintain its functionality for an extended period.

Rim Exit Devices vs. Mortise Exit Devices: A Comparison

Feature	Rim Exit Device	Mortise Exit Device
Installation	Surface mounted, simpler installation	Recessed into door, more complex installation
Cost	Generally less expensive	Generally more expensive
Security	Can be enhanced with electric locking	Often offers higher inherent security
Aesthetics	Can be more visible	Can be more discreet
Suitability	Ideal for high-traffic areas	Suitable for various security levels

Installation and Maintenance

While generally easier to install than mortise devices, professional installation of a rim exit device is recommended to guarantee proper functionality and security. Regular maintenance, including lubrication of moving parts and inspection for damage, ensures the device functions flawlessly in emergency situations.

Conclusion

Rim exit devices play a vital role in ensuring building safety. By understanding their various types, features, and considerations for installation, building owners and managers can choose the right device to meet their specific needs and uphold safety standards. Prioritizing safety and compliance with building codes should guide the selection process. Remember to always consult with a qualified professional for installation and to ensure your device meets all relevant safety regulations.