The Gerda SLR series cylinder is dedicated to the installation of a smart door lock operated by the Tedee application; Dimension A (inside part): 30 ... 61 mm ; Dimension B (outside part): 37 ... 68 mm ; Spacers: 2 x 6 mm, 2 x 10 mm, 2 x 15 mm ; Main features: C type - Cam ;