These Briton 9963 Electromagnetic Overhead Door Closers have a fixed strength of size 3.
These closers can be used on doors with a maximum weight of 60kg and a maximum width of 950mm, are tested to BS EN1154 and are CE Marked.
Features includes site selectable swing free or hold open, backcheck, adjustable closing speed and adjustable latch action - See FAQs for more information on how these functions work.