02-22-2022, 06:35 AM
My point about exhalation valves and the filters is unless you have the correct training you shouldn't be using them.
How do we know when you last changed your exhalation valve filter ?
That's why you won't be able to access my house among other places like airports.
How do we know when you last changed your exhalation valve filter ?
That's why you won't be able to access my house among other places like airports.