Designed to allow the awning sash to meet the limiting distance. The sash should always be secured in the open and latched position by engaging the lock levers on each arm. To reclose the awning form the secured position, rotate the locking levers on both arms to the unlocked positions, then push the awning sash outwards to disengage the support arm latches. Even pressure applied to the awning sash will ensure both arms disengage together. Sold as 1 x set of awning support arms - support arms 10'' Support arms must be used with sash balance style stays. Support brackets are mounted as low on the frame as possible to limit the opening distance. Awning sashes much be securely locked when left in the closed position. Dimensions: A 254mm (10'' track length) B 177.8 (closed position C 2.2 (bracket height) D 35 degrees (open arm angle)