Removable Center Mullions for Secure Double-Door Openings
Enhance the security and functionality of your double doors with professional removable mullions. Acting as a central pillar, a mullion allows two doors to latch securely using independent panic hardware, significantly increasing the opening's resistance to forced entry and wind-load. Whether you require a fire-rated mullion for life-safety compliance or a non-rated post for general security, these systems are engineered for industrial durability. Complemented by a full range of keyed cylinders and mounting brackets, these posts offer a flexible, high-performance solution for any commercial entrance.
Engineered for High-Security & Code-Compliant Openings
When securing a pair of doors with rim exit devices, a high-quality removable post is essential for maintaining both structural integrity and life-safety compliance. Our door mullions provide a stable center strike point, allowing each door leaf to latch independently while offering the flexibility to clear the entire opening for large equipment or high-volume traffic.
- Life-Safety Compliance: For fire-rated assemblies, we offer UL Listed and NFPA 80 compliant fire mullions. These 11-gauge steel posts are designed to withstand extreme heat, ensuring your fire doors remain securely latched during an emergency.
- Instant, Tool-Free Removal: Our keyed removable mullions are engineered for convenience. By using a standard rim cylinder, authorized personnel can remove the center post in seconds without specialized tools—ideal for convention centers and retail loading zones.
- Rugged Durability & Finish: Available in anodized aluminum or primed steel for field painting, our mullions are built to resist heavy impact and environmental wear. For coastal or high-wind areas, we provide hurricane-rated models that meet stringent wind-load requirements.
- Precision Installation: Ensure a wobble-free fit with adjustable mounting brackets and specialized thru-bolts. Our selection of mullion parts and kits allows for precision field-sizing and secure anchoring to both the floor and the frame header.
Mullion Brackets & Parts
A secure, wobble-free installation depends on high-quality mullion brackets and parts. This section includes top and bottom mounting kits, stabilizer blocks, and specialized thru-bolts for secure frame attachment. These components are essential for both new installations and the repair of existing openings.
Fire-Rated Mullions
Fire-rated mullions are strictly engineered to maintain the structural integrity of a fire-rated opening during an emergency. These UL Listed posts are mandatory for pairs of fire doors using rim exit devices, ensuring the doors remain latched even under extreme heat conditions.
Non-Rated Mullions
Ideal for exterior security or interior partitions where a fire rating is not required, non-rated mullions provide a robust strike point for exit devices. These posts offer the same high-strength physical security as fire-rated versions but are optimized for general commercial and industrial applications.
Keyed Removable Mullions
For facilities that require frequent, wide-access clearance, keyed removable mullions offer the ultimate convenience. These units can be removed in seconds using a standard rim cylinder, allowing for tool-free removal. They are the preferred choice for convention centers, hospitals, and retail loading docks.