Box Fan DIY Air Filtration Kit for 20" box fan and 20"x20"x1" filters (Corsi-Rosenthal box)

Efficient economical filtration of allergens, smoke, dust. 

Kit includes a base assembly with corner holders and 4 top corners with elastic cord to hold the fan in place.

***FILTERS AND FAN NOT INCLUDED. You will need to purchase a 20"x20" box fan and Four(4) 20"x20"x1" Fiters separately***

 

NOTE: Box fans have different curvatures. For fans with sharp corners please select 2" corners.

For fans with wider corners please select 3" curvature.

** If unsure of which corner to select, or if your fan corners have a different curvature, please contact the seller.

Corners 3D printed pieces are made from PLA plastic.

Base is made from corrugated poly twin wall.

Also includes: steel bolts, bungee cord, lock end toggle