I'm a 1952 polio respo partial quad. I've used vent with trach since 1973.
For several years I've used an LP-6.
As mentioned by others, this vent is no longer being serviced. My probable
choices are an LP-6+ or LPV 100.
I'm seeking input about the good, bad, or neutral points of either or both
of these vents from users and/or tech persons.
Thanks.
Art