TS500N No Hold Open. The Geze TS500 N EN3 floor spring is a compact floor spring, which has been designed for smaller swing and double action doors with a maximum leaf width of 950mm and weight of 100kg. With a size 3 closing force, this door closer also features fully adjustable end stop and closing speed, with the added convenience that all adjustments can be made easily from above.. For use on doors with a maximum leaf width of 950mm. Fixed closing force size EN 3. Adjustable end stop and closing speed. Can be used with both swing and double action doors