Dormakaba BTS80A Floor Spring – Non Hold Open Strength 4

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. Note: Designed for installation into aluminium doors &hellip