A female-male coupling made of expanded polypropylene
(EPP) is used to connect the EPP-15 ducts, when the male part
is cut off (e.g. when duct is shortened). The female coupling
fits the outer diameter of the 15 mm duct. The couplings are
produced in 125, 160 and 200 mm sizes.
Thermal conductivity: 0.039 W / m*K
Airtightness class: ATC2 (old D) @ 90 Pa acc. to PN-EN 17192:2019-01
