Zehnder ComfoTube Flat 51 manifold, ComfoMain rigid single duct to 4 x Zehnder ComfoTube Flat 51 ports AX3684 blocking will occur every 6

blocking will occur every 6 - 12 months depending on the location (near busy roads or inner city areas tend block more quickly than remote country settings)

for direct connection to system

220x90mm x 500mm Long Duct Silencer

Details The testo 440 Air Flow ComboKit 2 with Bluetooth® is a complete measurement solution for HVAC professionals who require reliable and versatile tools for air velocity and volume flow measurements

Fast fit duct system with brown external grille

Zehnder ComfoTube Flat 51 manifold, ComfoMain rigid single duct to 4 x Zehnder ComfoTube Flat 51 ports AX3684 blocking will occur every 6Zehnder ComfoTube Flat 51 manifold. Extremely low profile and compact design. Suitable for use with the Zehnder ComfoTube Flat 51 semi rigid ductwork and comes complete with award winning RapidLock connections to quickly form an air tight and robust seal by simply push fitting the semi rigid ductwork when combined with the o ring seals sold separately. Must be used with single Zehnder ComfoMain CK150 ductwork, the manifold has a single CK150