Profile: National Security & Door sells, installs, and services a vast array of products used in the security integration field and the distribution of architectural door & hardware products used in new & renovation construction projects. Our products include security products, electronic access control, video surveillance, architectural door, hardware sales, hollow metal and aluminum entrance systems, locksmith services, automatic door, and low energy handicap operators. Chain resistant security openings are ideal for any opening which is a main egress point for a group of people. Our specially designed stainless steel pull handle and ?catchless? door design resists being bound or otherwise chained shut.