The Thermobox 150 & 125 is manufactured by Naber in Germany and Blower-Door Certified (required opening pressure >65 Pa).
· Up to 20 times less heat loss (compared to standard back flow traps)
· Efficient thermal insulation of the exhaust opening
· Heat insulating reflective layer
· Can be retrofitted in existing 125mm ducts
· Innovative opening and closing mechanism
· Blower-Door certified (required opening pressure >65 Pa)
· Magnetic opening and closing
· Defined opening pressure prevents rattling
· Opens fully even at low flow rates
· No vibrations, no rattling noises
This product can be retrofitted in existing 150mm & 125mm ducts and will open fully even at low flow rates.