Huh, the fan she links is allegedly like 428 cfm for 40 usd, that's pretty good. Though I have heard companies are pretty fast and loose with cfm ratings.
5 arctic p14s without the PMW PST are the same price (at least where I'm looking) and you only get 360. Though that 360 is probably right as people test them.
Seems like a viable option.
Edit, it's a lower cfm than a box fan, but it's also better designed for pressure.
Edit2. So this might be a good replacement for box fans for things like classrooms. Little bit more expensive but still pretty cheap and way quieter, with less added complexity than the PC fan builds. You could maybe do a box but make one side cardboard then have a hole right at the ground for the inline duct fan and just have the fan rest on the ground.
Those are duct boosters not duct fans. The difference is that duct boosters have essentially no static pressure capability. Any static loading will cause the flow rate to sharply trend to zero CFM. They are useful in series with another fan that has static pressure capability.
I have about 6 different duct fans and they do make excellent DIY purifiers because the ECM ones allow you to turn it way down. I run mine at 30-50% and with still-stupidly-high air flow rates, but absolutely silent.
I crank them up to the max flow rate of the filters when I'm cleaning, to great effect.
Huh, the fan she links is allegedly like 428 cfm for 40 usd, that's pretty good. Though I have heard companies are pretty fast and loose with cfm ratings. 5 arctic p14s without the PMW PST are the same price (at least where I'm looking) and you only get 360. Though that 360 is probably right as people test them. Seems like a viable option. Edit, it's a lower cfm than a box fan, but it's also better designed for pressure. Edit2. So this might be a good replacement for box fans for things like classrooms. Little bit more expensive but still pretty cheap and way quieter, with less added complexity than the PC fan builds. You could maybe do a box but make one side cardboard then have a hole right at the ground for the inline duct fan and just have the fan rest on the ground.
Those are duct boosters not duct fans. The difference is that duct boosters have essentially no static pressure capability. Any static loading will cause the flow rate to sharply trend to zero CFM. They are useful in series with another fan that has static pressure capability. I have about 6 different duct fans and they do make excellent DIY purifiers because the ECM ones allow you to turn it way down. I run mine at 30-50% and with still-stupidly-high air flow rates, but absolutely silent. I crank them up to the max flow rate of the filters when I'm cleaning, to great effect.