The Dorma BTS80A is a highly adaptable floor spring suitable for all standard single and double action doors with widths up to 1100mm and 120kg door weight. This floor spring is enhanced by its adjustable closing force of EN 1-4 individually regulated by means of an adjustment bolt.
Designed for installation into aluminium doors
Kit includes floor spring, cement box, bottom strap, cover plate, top pivot and sealing compound
Suitable for use with timber or metal doors
Adjustable spring strength
Door stop is recommended to prevent damage to floor spring
Lead times listed under additional information
Finish: Grey closure body, Stainless Steel Cover Plate