Double cylinder deadbolts have a high security level. The IBC limits this second security device to dwelling units with an occupant load of 10 or less typically units with an area of 2,000 square feet, maximum. Shall comply with Section 406.4 406.6 of the 2021 IBC. At least one egress door shall be provided for each dwelling unit. In the U.S., there is no single comprehensive law against dual-cylinder deadbolts. The Massachusetts One and Two Family Dwelling Code does not allow double- cylinder deadlocks. Same with a a large dog. Individual cities and states have local property and fire codes that may prohibit the use of dual-cylinder deadbolts. It requires four AA batteries, which are included. The Police Officer interviewed showed and recommended the use of a "double key" style deadbolt lock. For a front approach on the push side of the opening, the accessibility standards require additional maneuvering clearance on the latch side if the door has both a door closer and a latch. The lock will have to be turned on the inside of the door and on the outside of it. A few buyers did complain that the lock felt "loose" when being locked or unlocked, and a handful of others had trouble with their key not fitting into the lock easily, but we still feel that most people will be pleased with the price and performance of this basic double-cylinder deadbolt. The minimum clear height of the door opening shall not be less than 78 inches (1981 mm) in height measured from the top of the threshold to the bottom of the stop. Thats all you need to know! The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Are double cylinder deadbolts legal in Massachusetts? However, today there are many deadbolts that are key-optional. d) The thumbturn and cylinder would have to be between 34 inches and 48 inches above the floor. Many entrance doors to dwelling units and sleeping units are fire door assemblies. Grade 2 deadbolts are not quite as secure and, thus, are less expensive. Don't subscribe However, the manufacturer notes that fingerprint recognition might not work well on very young children or elderly adults. Are double cylinder deadbolts legal? - greenyplace.com could they be legal even though the deadbolt is not between 34-48 inches? Schlage and Falcon are registered trademarks of Allegion plc. Replies to my comments Like any mechanism with moving parts, a deadbolt does eventually wear out, thus reducing its ability to withstand brute force, lock picking, and other methods of defeating the lock. One is not any better or worse than the other. Extra protection can be added to your door with two locks. Emergency exits dont consider double- cylinder deadbolt locks to be safe. The egress door shall be side-hinged, and shall provide a minimum clear width of 32 inches (813 mm) when measured between the face of the door and the stop, with the door open 90 degrees (1.57 rad).