50cm pipes with damper / burn regulator from oval to round allow to make, as its name indicates, the transition from an oval duct to a round and control the extraction and consequently adjust the burning. This allow to continue the installation using round pipes and accessories - standard. This way, the installation is cheaper than making the whole conduct oval.
Manufactured in Stainless Steel AISI 304, CrNi 18/10, 1st quality, with a thickness 0,5mm.