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The Importance of Elevator Floor Number Jamb Plate Signage on Both Sides of Each Landing door 

Elevator floor number signs, also known as jamb plate signs, play a critical role in building safety, accessibility, and code compliance. These signs are typically mounted on both sides of the elevator door frame (jamb) at every floor landing, clearly indicating the floor number to passengers and emergency responders. This is not just a convenience—it is a life-saving necessity in times of emergency, especially for fire departments navigating unfamiliar buildings under time-sensitive conditions. Proper floor labeling on both jambs ensures that the floor is immediately identifiable no matter which direction personnel approach from.

From an accessibility standpoint, the Americans with Disabilities Act (ADA) and local building codes often require raised characters and Braille to be included on these signs. Placing jamb plate signs on both sides of the elevator entrance helps individuals with low vision or those using mobility devices to independently identify their location. Additionally, dual-side installation allows visibility whether the person is exiting the elevator or approaching it from the stairwell or hallway. For those unfamiliar with the building, this reduces confusion and aids in wayfinding—critical for older residents, guests, and delivery personnel.

Code compliance further emphasizes the necessity of jamb plate signs. According to the International Building Code (IBC), International Fire Code (IFC), and ANSI A117.1, elevator floor identification signs must be installed on both sides of the jamb at each floor landing. NYC Building Code and NYC Fire Code echo this requirement in high-rise and multi-family dwellings. These signs must be durable, tamper-resistant, and permanently mounted. The standard installation height is 60 inches (1525 mm) above the finished floor to the centerline of the sign, ensuring universal readability and compliance with ADA regulations.

In conclusion, elevator floor number jamb plate signs are not just building features—they are essential safety tools. Proper placement on both sides of the elevator at every floor landing ensures compliance with fire, accessibility, and safety codes. Clear, high-contrast markings with raised letters and Braille help all users, including those with disabilities and first responders. Ensuring correct height placement—typically at 60 inches to the center of the sign—guarantees visibility and uniformity across all levels of the building. Investing in the right signage enhances both usability and safety, while avoiding costly code violations.