Holmes HAP-240 HEPA Home Made Filter System
The front section of the air cleaner is inside the box. This is the side
where HEPA clean air exits the air cleaner. The air intake parts of the air cleaner are on
the outside of the plastic box. I cut the hole in the plastic box with a sharp
serrated knife and metal "tin" snips. I used silicon caulk to form an
airtight seal between the Holmes HAP-240 HEPA air cleaning unit and the plastic box.
I also used clear plastic shipping tape to support the junctions between the
air cleaner and the plastic box. I place the lid back on the plastic box when the unit is
not in use. I purchased the plastic box at K-Mart. I think that it cost me
around $10.00. The HEPA air cleaner was purchased at a local hardware store. I have
seen the exact HEPA air cleaner advertised at $49.00 several times recently.