That rules! Looks like you can do it with like 3 filters so it's more triangle shaped which makes sense. That's so stupidly simple too. Also aesthetically pretty cool - would look great in a workshop where it's like function first/don't hide the mechanism. And I feel like there's gotta be clever ways to incorporate something as simple as "box fan but the box is made of air filter" into like a coffee table or stand or something else clever? Probably you'd want to hide the filters inside if they look grimy before you actually need to replace them so you don't feel obligated to waste money by replacing too soon but sounds like a fun time to figure out how to integrate that in a hidden way into whatever's your vibe without looking jank
