pipe bridges Poland

...Round ventilation duct made of expanded polypropylene (EPP). The most important features of the product are rigid construction, low weight, easy assembly (integrated malefemale coupling) and good thermal insulation. EPP ducts, used, for example, as sections of the supply and exhaust ventilation systems with heat recovery, do not require additional insulation. The system eliminates the formation of thermal bridges. Lenght EPP ducts 1 m sections Diameters 125, 160 and 200 mm. Wall thickness 15 mm Thermal conductivity 0.039 W / m*K Airtightness class ATC2 (old D) @ 90Pa acc. to PNEN 17192201901 ...