3M Filtrete Air Filters 1550 Series Deep Pleat 4" 2 pk
No item number recorded · OtherNext expected now through Nov 23
The short versionEarly signal
Goes on sale about every 2 months. Typically $10 off. Next expected now through Nov 23. Based on only two sales, treat this as a rough guide.
Seen on sale 2 times.
Sale timeline
● sale (height = discount)○ unsure reading┆ today▮ predicted window
Full history
| Dates | Discount | Sale price | Source |
|---|---|---|---|
| Sep 21 – Oct 18, 2026 | $10 off unsure | — | Costco October 2026 |
| Jul 27 – Aug 23, 2026 | $10 off unsure | — | Costco August 2026 |