Question:What is the highest rating for a wood door? Answer:Rated openings up to 90 min. can contain a properly constructed and labeled wood door. Beyond 90 min. (2HR, 3HR, etc.) a metal door is required.Also: 90 min. is the highest rating where a KD (knock-down) metal frame can be used, beyond 90 min. the HM (hollow metal) frame must be welded.
In addition to a broad offering of product and service solutions, IDN offers pre-sale and post-sale technical support. The benefit to you is that we make security simple. Whether your task is related to high security systems, electronic access control, door installation, or other, our experts are here to assist. Just let us know how we can help. Do you have a question, or need a quote? Contact your local IDN Branch, or ask the Door Guy through our website.© Copyright IDN, Inc.