Rob Wissmann Profile picture
I guess I make air cleaners now. Visit https://t.co/JlbWu7b3Dv for prebuilt pc-fan corsi-rosenthal boxes and kits. @robwiss https://t.co/t0Y3O9CXIe and threads
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Nov 14, 2023 5 tweets 3 min read
The Airplate S9 SWITCHEROO ⤴️⤵️

The S9's stock finger protector creates a gap between the fan and the mounting plate. After taking it apart and swapping the protectors to eliminate that gap, CADR was retested.

196 cfm ➡️ 222 cfm

If you've got one, swap them! @JimRosenthal4


The finger protectors shown in their stock positions, with the honeycomb protector on top.
The finger protectors shown in their swapped positions, with the honeycomb protector on the bottom.
Test data
The stock finger protector.
Disassembly 🪛💥

Using a Phillips screwdriver, unscrew the top. Next, peel the honeycomb protectors off (pic 1). They're stuck on with vibration reduction pads.

Flip the fan enclosure (pic 2), unscrew the bottom, and remove the standard protectors (pic 3).

Pic 1: Top of S9 removed and one honeycomb protector peeled off.
Pic 2: Fan enclosure flipped over
Pic 3: Bottom unscrewed and standard protectors removed.
Dec 21, 2022 4 tweets 2 min read
As part of @CleanAirKits I'm proud to present the newest PC fan #CorsiRosenthalBox build, the Healthy Glow.

CADR: 356.9 ±3.50 cfm / 606.3 ±5.95 cmh 🙌🙌
Power: 17.7 W
Noise: 44.5 dBA

4 Lian Li ST120, 3 Arctic P12 + 16x25 Filtrete 1900 bring high CADR to a smaller form factor. Test data for all of the configurations
Nov 20, 2022 21 tweets 5 min read
A new pinned tweet -- all filter testing I've published to date.

First, the test chamber write-up.
And a quick look at test chamber automation.

Aug 7, 2022 10 tweets 6 min read
New build! 5 Arctic P14 PWM PST + 4 Ikea Starkvind

CADR 232 cfm / 394 m3h
dBA 40.5 🤫

#CorsiRosenthalBox
@PlasticFull @JimRosenthal4 @amandalhu @CleanAirStars @PeteUK7 @michael_hoerger @CRBoxKits @LazarousLong13 @uhwuhna @Flying_Donny Photo of air purifier and t... Purpose of this build was to use all 5 fans in the P14 5-pack and to go as low-cost as possible with fans + power supply. PWM PST version more expensive but they daisy chain, one less connector to purchase & assembly is easier. View of inside of air purif...
May 27, 2022 7 tweets 4 min read
#MiniCR with Starkvind and Arctic P14 fans.

A quiet 37.1 dBA at full power with an estimated CADR of 243. This CADR puts it in competition with a MERV13 Lasko box fan build, the noise level puts it over the top.

Oh and I put ✨LEDs✨ in it this time.

#CorsiRosenthalBox ImageImageImageImage I experimented with fewer filters to see how the Arctic P14 fans did.

3 filters: cfm at 12V drops to 202.2. 21% drop from 4 filters.
2 filters: cfm at 12V drops to 146. 43% drop from 4 filters.

@mrpunan @PlasticFull @DavidElfstrom @Mw_ottawa @ee_kelsey