Check the listing for details. Environment Box DN20 Pump Group 2 Heating Circuits 1x Mixed 1x Unmixed. Color: Black, Width: see description, Condition: New. Listed at 802.92 USD. Pump groups distributor system 1x mixed heating circuit 1x uncomfortable heating circuit with distribution beam/hydraulic switch ✓ The Environ box only needs half as much space as Herman pump groups. ✓ The Environ Box can be installed in three different positions. So your specialist company can set the best position for your installation. Advantages of the Environ Box: 1. Installation possible in the smallest space 2. The whole system is completely insulated 3. Total protection of the electrical components 4. Protection and ventilation of the pump 5. Protection and ventilation system of electrical components 6. Ballows with check valve 7. Including wall bracket 8. Light installation: The Environ Box is easy to install, compact, light and easy to use. 9. Modular built 10. Integreister distributor beam 11. Integrated Hyrdaulic switch.