844359031656

• 8 — Number system
• 44359 — Manufacturer code
• 03165 — Product code
• 6 — Check digit (confirms the number is well-formed)

UPC-A ✓ Valid check digit

• 844359052491 — 18X24X1 17.5 X 23.5 Platinum Filter Merv 11 1 In
• 844359051517 — 15X25X1 Actual Size Platinum Filter Merv 11 1 In
• 844359052798 — 24X36X1 Actual Size Platinum Filter Merv 11 1 In
• 844359051951 — 24X25X1 Actual Size Platinum Filter Merv 11 1 In
• 844359052842 — 30X36X1 Actual Size Platinum Filter Merv 11 1 In
• 844359080258 — 24X25X1 23.5 X 24.5 Diamond Filter Merv 13 1 In

21X21.5X1 (20X21.13X.75) Merv 13 Aftermarket American Standard Replacement Filter (2 Pack)

Search for 21X21.5X1 (20X21.13X.75) Merv 13 Aftermarket American Standard Replacement Filter (2 Pack) on Amazon (or for the code 844359031656)