Welcome to DU! The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards. Join the community: Create a free account Support DU (and get rid of ads!): Become a Star Member Latest Breaking News Editorials & Other Articles General Discussion The DU Lounge All Forums Issue Forums Culture Forums Alliance Forums Region Forums Support Forums Help & Search

DIY & Home Improvement

sl8

(16,644 posts)

2. Sure, with 1/4 the surface area.

Reply to Patterson (Reply #1)

Sat Dec 11, 2021, 11:48 PM

Dec 2021

I've been using a single filter with a slightly modified box fan in my workshop for years. Not MERV 13, though.

The cube version in the video has 4 times the surface area, so it will present less of a load on the fan motor. Also, the filters won't need to be changed as often.

Edit history

Please sign in to view edit histories.

Recommendations

0 members have recommended this reply (displayed in chronological order):

7 replies

= new reply since forum marked as read

Highlight:

How to Make a DIY Air Filter - Ask This Old House [View all] sl8 Dec 2021 OP

Or you can use just 1 20x20 as thick as you want. Patterson Dec 2021 #1

Sure, with 1/4 the surface area. sl8 Dec 2021 #2

If you put that in front of the air intake for the Phoenix61 Dec 2021 #3

This is way cool. Ima gonna head on out to pick up supplies....Many thanks!! mitch96 Dec 2021 #4

One oif our systems uses a 4" filter - I think I bought a MERV-14 when I had to order some csziggy Dec 2021 #5

Post removed Post removed Feb 2022 #6

Bookmarked Auggie Mar 2022 #7