From replacement hoses to extensions all hoses are designed to fit which ever InterVac product you have. However it is important to make sure that you receive the correct "cuff", the portion that plugs into the vacuum itself.
If you are unsure of which model you have here are some quick reference points.
The H&F Models are turned on with a power switch on the front of the vacuum
The RM Models will be turned on automatically when you insert your hose which has a metal band on the cuff into an inlet valve.
It is important to choose the correct hose or your vacuum may not function properly. If you have any questions please feel free to contact us toll free at 888-499-1925