April Flat Bottom Paper vs Fellow Stagg [X]

Fits

Flat basket, Kalita Wave 155, Kalita Wave 185

Flow

Fast · Manufacturer-stated

Material

Paper · Cellulose

Reuse

Single-use

Availability

Specialty only

How it brews

The Copenhagen roastery's own flat-bottom paper, sold Small (≈Kalita 155 / Origami S) and Large (size 175, for the April plastic brewer). It's cut to sit deep with a wide base and is marketed as flowing faster than conventional flat papers — that speed claim is April's, kept as a class rather than a number here. One honest ambiguity: older retailer copy described April filters as using Sibarist's abaca FAST technology, while the current listing says virgin wood pulp (cellulose); we record cellulose per the direct listing but don't treat abaca as confirmed. It drops into a Kalita Wave 155/185 seat, so it interchanges with those papers.

Fits

Kalita Wave 155

Flow

Unknown · Unknown

Material

Paper · Cellulose

Reuse

Single-use

Availability

In production

How it brews

Fellow's flat-bottom, fluted paper cut for the shorter Stagg [X] dripper (~1-2 cup). It's a Stagg-proprietary flat seat, but Fellow and the community treat the X as interchangeable with the Kalita Wave 155 footprint, which is the seat we record — the papers are steeper-walled than a true Wave, so this reflects Fellow's own cross-compat guidance, not identical geometry. Fellow publishes no flow rating, so flow is left unrated.