Accessory Pack for DORMA Single Action Floor Springs
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The DORMA BTS80FLB is a floor spring with electro-hydraulic free-swing function and backcheck. It is CE marked and a power size EN4.
The DORMA BTS80EMB Floor spring has electrohydraulic hold-open and integral pressure compensation feature for multipoint hold open between 75° and 175°. With adjustable, hydraulically controlled closing speed, adjustable latching action and backcheck.