Dorma, Floor Closer ‘BTS-4’ with spindle – EN 3 – 20Nm

The economic solution for swing and pivot doors.

Built-in floor spring with very low installation depth, available in EN 1, EN 2, and EN 3, as well as with or without hold-open at 90°.

Exceptionally flat design. Optional hold-open feature. Tailored to the specific requirements of door closers for pivot doors, the BTS-84 impresses with its particularly flat design and resulting optimal installation possibilities. With a choice of two closing ranges and corresponding closer designs, the BTS-84 meets virtually all demands. Reliable operation is ensured by guaranteed quality.

The maximum opening angle is 130°.

A doorstop is necessary for doors with an opening angle greater than 130°.

Adjustment screws for closing speed (130° – 0°) and final latching action (20° – 0°) are easy to operate once the cover plate has been removed.

Floor springs are supplied with spindle but exclude cover plates and optional extended spindles.