RT @3M: Duct tape, air filters & a box fan. This #DIY movement caught the eye of 3M scientists & Posted by Matthew on February 25, 2022 Posted in: Twitter. Tagged: Twitter. Leave a Comment RT @3M: Duct tape, air filters & a box fan. This #DIY movement caught the eye of 3M scientists & after testing, the results are clear: theā¦ Posts navigation ← Upgrading the SD card in the family Switch. Wish me luck. 10 9 8 76ers! →