"Clever energy saving - avoid cold bridges and stop drafts easily.
Suitable for belt width 23 mm Suitable for all belt thicknesses Simple retrofitting without dismantling the belt winderPossibly existing plaster belt box guide can be overbuilt by up to 5 mmAir permeability class 1 according to Energy Saving Ordinance (EnEV) confirmed by expert opinionSealing plate with 2 mm PE foam"