| Technical DownloadsFitting instructions, technical data and operations/maintenance instructions for your ironmongery from Welling. Handing for Rising Butt Hinges HESO 'Hollow Spindle' Fitting Instructions Split Spindle Fitting Instructions Euro & Oval Cylinders - Keying Option Definitions Door Closing Devices Single Axis Hinges Electronically Powered Hold Open Devices Panic & Emergency Exit Devices Mechanically Operated Locks, Latches & Locking Plates |