Ceiling connection column 2-sided clamping range 2.5-2.8m aluminum DA200 L=2.45m anodized. Electrical installation duct system Ceiling connection column made of aluminum with clamping mechanism for ceiling connection as a device installation system for installing device installation components. Consists of rectangular base profile slightly curved, upper part 80 mm, 1- or 2-two-sided, partition wall, ceiling cladding, clamping mechanism with quick fastening made of galvanized steel, pre-assembled spirit level for alignment and earthing accessories for electrical connection of base profile/upper part. Ceiling connection column for installing built-in devices using front-locking fastening technology. All built-in devices/inserts are to be mounted with covers, frames or cut-concealing/arrangable panels with/without identification plate. Notes: Earthing measures must be carried out professionally. The specified length corresponds to the column profile length.