Application: Heat pump systems, extension set 40mm for flexoTHERM 15/19kW with 2x aroCOLLECT consisting of: 2 x brass connection piece 40 x R 1 1/4 to PE pipe 40 x 3.72 x angle coupling 90° for PE pipe 40 x 3.72 x T-pieces for PE pipe 40 x 3.71 x empty pipe for laying the E-bus cable in the groundExtension set 40mm for flexoTHERM 15/19kW with 2x aroCOLLECT consisting of: 2 x brass connection piece 40 x R 1 1/4 to PE pipe 40 x 3.72 x angle coupling 90° for PE pipe 40 x 3.72 x T-pieces for PE pipe 40 x 3.71 x Empty pipe for laying the E-bus cable in the ground