15811000. The Dormakaba door loop 260 is a stainless steel spiral with installation case for inserting flexible connection cables of up to 7.5 mm diameter. This guarantees a crush-free and tamper-proof connection between the leaf and frame of doors and windows.. Suits door hinges with a pivot point of up to 18mm. Maximum opening angle 110 degrees. Length of flexible spiral 155mm. Installation dimensions of the installation case (W x H x D): approx. 24 x 260 x 17 mm