The Lockwood Rack and Pinion Slide Arm Series provides for a cleaner, more aesthetic appearance on the door whilst utilising the same robust features and benefits of Rack and Pinion functionality.Ideally suited for schools, hospitals or doors where children, disabled or the aged may enter. Back Check Back check cushions or slows the opening movement of the door prior to reaching the final open position. Back check intensity is adjustable to allow for door size,door weight and closing power. It is mandatory on all fire doors. Delayed Action The delayed action is an independent valve and can either be adjusted as part of the closing sequence or independently adjusted for delayed action. Such doors are particularly suitable for use by the disabled,the aged and people with prams or trolleys. Fire Test The Lockwood 726 SRDA series closer has been successfully tested upto four hours (depending on type of doorset) on fire door assemblies in accordance with Australian Standard AS1905.1:2005, Part: Fire Resistant Door sets. Note: Hold open option is not approved on any fire door.
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