Female coupling made of expended polypropylene (EPP) for connecting 43 mm thick ducts. The coupling is used as additional piece, for example when connecting ducts which were cut. Such coupling is put on the outer diameter of a duct. The female couplings are produced in the following diameters: 125, 160 or 200 mm.
Thermal conductivity: 0.039 W / m*K
Airtightness class: ATC2 (old D) @ 200 Pa acc. to PN-EN 17192:2019-01
