Range The Exidor Door Controls offer a choice of suited product ranges, from a size 2/3 selectable, to the 2-5 adjustable with backcheck and delayed action options. Hold open arms are an optional accessory, and a choice of high efficiency slide arm closers are also available. A comprehensive selection of E-mags completes the overhead door closer series. Exidor also offers a choice of floor springs, from the adjustable power size 1-4, through to the heavy duty power size 1-6 range, which can be used on doors up to 600KG. Transom closers and the newly introduced concealed and slimline ranges complete Exidor's comprehensive offering. Cam and Roller The Exidor overhead door closer range features the unique high efficiency cam and roller action which is ideal for use where the Equality Act 2010 (formerly the DDA) and BS8300 – Approved Document "M" need to be considered. The floor springs and transom closers use a double cam mechanism that not only gives class leading carrying capacity and efficiency, but provides excellent centring at the zero position in the double action version. This is achieved by using an additional cam, which is not subject to the same wear as the main cam, to provide an accurate return to the zero position, regardless of the number of cycles in either direction which the closer has performed.