The 3842554134 COMPACT LOCK emergency release system by Bosch Rexroth is perfect for right or left stoppers. The 'uniform closure' variant uses the same key, while the 'standard closure' variant offers a random key selection. This original product is compatible with numerous profile combinations and features hidden fixing screws. Installation allows emergency opening from the inside, according to mounting instructions 3 842 554 192, without requiring profile processing. Superior quality and local support through CreatX Technology SRL ensure reliability and efficiency.