link 5000The innovative link allows the closure plate to be positioned to reduce draughts with the benefit of directing air away from occupants. The Link Vent 5000 closure plate is split to allow for partial (50%) opening and further ease opening ofLink 5000 Plus (L5000Plus.exe). It is a PC confuration for the DSE51xxDSE52xxDSE53xx and DSE55xx Control Modules.