Maximum Door Leaf Weight: 140 kg Minimum Door Leaf Width: 475 mm Maximum Opening: 3000 mm features: Telescopic additional door leaf set Compatible with SDS Standard 140 Track and fittings Components required to make three doors telescopic: One length of track 2 x door width One length of track 3 x door width One length of track 4 x door width One two door telescopic kit 18335 One additional door set 18336 One mounting tool 18337 Longer lengths of track are available to order, please contact our sales team