ActiVac II Exhaust HEPA Muffler Filter Q&A

You can use the ActiVac II if your Filtex TSP300L has an exhaust port.

The ActiVac may fit it, we have not heard of that brand. If the exhaust is coming out a round hole that has a two inch outer diameter then it fits it.

The ActiVac Exhaust Filter may be used instead of the exhaust run out doors IF the central vacuum unit has a filter in it. Either paper bag or cloth or thick foam or pleated cartridge. Some vacuums have only a thin foam filter or just a screen and they let too much dust into the exhaust. This would quickly clog the exhaust filter causing secondary issues to the unit.

The filter dimensions are 9" x 5" and what appears to be threading in the photo is actually a gasket. The filter mounts with an elbow connector fitted to the exhaust port and the opposite end of the elbow connector to the filter.

Sorry for the confusion but only the "MD ModernDay" Model J is compatible because it has an exhaust port. The B2, E2, and others that have lots of louvers in the front and back at the bottom are not compatible.

Yes, you can use the Activac with Nutone model CV450.

The ActiVac II does not reduce the suction of the vacuum. Vacuflo True Cyclonic (no filter) units should not use the ActiVac because lots of dust goes out the exhaust and it would clog the ActiVac and slow the suction. All other vacuums do not have that issue.

You will need some fittings and short length of central vacuum pipe to set the filters in a way that works best for where the vacuum sits. The top exhaust port can have the filter fitted on using a single 90 spigot turn (included with the filter). The lower filter will need a connection that comes straight out and then turns up or immediately turns at an angle using the 90 sweep which will connect to a pipe and then a 45 spigot to the filter, or to regular 45 and another pipe which the filter will go on. It depends on the space you have to work with. Here are the parts you can choose from https://builtinvacuum.com/install_shop/pipe-fittings.html. Use PVC glue but do not glue it to the vacuum tank.

This filter is made to capture very fine particulates so it is not washable.

The ActiVac Exhaust Filter is unique. It is completely sealed so all the exhaust is filtered. Not only does that mean clean air, it also means any dust in the exhaust will be trapped and will build up over time. Seeing that every central vacuum has somewhat different filtering, the lifespan of the ActiVac will also vary. Units will excellent filtration may never need a replacement. Units will no filtration should probably not use the product at all (such as Vacuflo True Cyclonic). We suggest removing the filter from the unit yearly to look inside for dirt build up much like you would evaluate a return air filter.