The Dormakaba BTS 84 Size 4 floor spring provides concealed, self‑closing control for heavier doors without a hold‑open function. Ideal for high‑use commercial openings where a minimal look and dependable performance are required. Adjustable closing speed supports tailored operation to site conditions. Suits glass, aluminium and timber doors. Durable engineering and a flush floor installation deliver long‑lasting reliability and a professional finish.

$615.00

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