Zehnder Filter set 2x Coarse 60% (G4)) for ComfoAir 70 990 323 504 ATEX zone 0 gas compliant ATEX zone 0 gas compliant for safe use in hazardous environments • Back lit LCD display• Large weighing platform and durable and sturdy injectedmoulded components• High accuracy load cell• Pass through charging (moving the charge hose does notaffect weight)• Small diameter durable CLRF Series hoses included• Charging valve included for precision charging• Schrader valves included to prevent refrigerant loss leaks• Cylinder adapter with Secure Seal low loss fitting includedfor inverted charging• 2 charging orientation options: upright and inverted• Velcro loop included for stabilizing the refrigerant canister(upright charging)• Designed for R600a and R290• Other charging methods are possible by using additionaladapters for different canister types This set consists of 2x filters Coarse 60% (G4) Coarse refers to particles 10 micron