Pressed ventilation duct elbows dedicated for SPIRO ducts and regular ventilation ducts. Linearweld improves the tightness of the ventilation system, whereas the doubled-over ending creates a safe edge to protect your hands during installation. To connect the elbow to the ventilation duct, slip it into the duct. Pressed form results in less resistanceand lower pressure drop. To improve installation tightness to class B insulation, we recommend to seal the connection point with TAL, MET, or DUCT insulation tape. Example identification Technical Data ALIMOR systemy wentylacji jest prawnie chronionym znakiem i technicznym patentem. Prawo do zmian zastrzezone