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properties /facet

property token a chosen word

filter media

What the filtering element itself is made of — cellulose paper, synthetic microfibre, a blend, cotton gauze, foam, activated carbon, a biofunctional layer, metal mesh, ceramic. Stated MANY times because a real element layers media: MANN's FreciousPlus FP 2043 is particulate plus premium activated carbon plus a polyphenol biofunctional layer, one part, three media. This is NOT the spine's `material`, which is the body a product is made of: WIX 51521 has a steel body and an enhanced-cellulose element and one slot cannot say both — the same reason this pool already carries bristle_material, blade_material, mop_head_material and sleeve_material beside `material`, each with its OWN vocabulary rather than MaterialTypes. Concern facet, axis-eligible, and the trade proves it: MANN sells one cabin application as CU (particulate), CUK (activated carbon) and FP (biofunctional), and Fram sells one oil application in cellulose and full-synthetic tiers.

Filter media is answered with one word chosen from the filter media types list — the same word shared across every product that uses it.

It belongs to facet — one facet of a product.

asked by the kinds that answer it

2 kinds answer it, each for any number of values. The same question can be reused by unrelated kinds — one meaning, many homes.

answered with
token — a token — a word chosen from a fixed vocabulary, shared and filterable across products.
value domain
Filter media types — the vocabulary its answers are drawn from.
concern
Facet — the facet of a product it belongs to.

asked by kinds that answer it

The same question can be reused by unrelated kinds — one meaning, many homes.

kindhow many
filter many