#MERV13
Live, measured metrics for the hashtag #MERV13 from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #merv13
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Day-by-day usage
measured · fosstodon.org (Mastodon public tags API) · fetched 2026-07-28 13:26 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · fosstodon.org (Mastodon public search API) · fetched 2026-07-28 13:26 UTCLive pulse
measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-07-28 13:26 UTCEverything below is measured over the latest 19 public posts (spanning ~32026 hours).
Posting hours (UTC) — busiest: 10:00
Languages: English (19)
Avg boosts / post: 4.6
Top of the latest posts
#DIY box fan filters – #CorsiRosenthal box "Also known as a Corsi-Rosenthal box, this DIY method of building your own air filter with #MERV13 furnace filters and a box fan are an easy and cost-effective way to help clear indoor air from air
eed new filters for your Corsi-Rosenthal box? 💨 Donate A Mask has a 12-pack of Replacement MERV-13 Filters - AAF Flanders on sale for $299.99. Get ready for #WildfireSmoke. Pick up a 12-pack today! Sale ends May 23. ⏰ 🛍 https://buymask.ca
Pro tip with Canada fires if you're in a safe place but still get smoke from them: if you don't have a furnace that can accept MERV13 filters, you can duct tape one to the front of a box fan if the area to filter is small enough, or do the
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/merv13