What goes wrong
On this page9
Filtering on Recyclable
The field is on 117 of 238 rows, takes exactly one value, and the rows carrying it are exactly the PET rows. Filtering for Yes returns the PET shelf and loses 121 rows that failed no test.
Reading the absence of Recyclable as a negative
Seventy one polypropylene rows and 50 glass rows do not carry the field. Nothing on these pages says any material is or is not recyclable, and the record does not either.
Building a search around temperature range
It takes three values on this shelf and they map one to one onto the three materials, so the search is a material search wearing a different name. Across the whole catalog the field takes nine values, so this is a property of the shelf rather than of the field.
Filtering on width
It appears on 14 rows of 238. A width filter silently drops 224 rows and returns something that looks like a narrow shelf rather than an unanswerable question.
Reading quote only as unpriceable
Ninety rows are quote only and the recorded reason is unavailable on 88 of them. Exactly one row has no price. A third of the shelf is a timing problem and not a pricing one.
Treating any buyability flag as durable
Quote only, drop ship only and full case only are three separate states, they are not nested, and the counts here are a snapshot of 19 October 2026 rather than a standing description.
Mixing body clips and trim retainers in one jar
Dozens of similar unmarked vehicle specific shapes. These are the two leaves that genuinely need one size per container, because nothing on the part distinguishes it and nothing recovers the identity once it is mixed.
And expecting this shelf to answer a question about condition
Nothing recorded here is a state. 40 CFR 279.22 is the spine of this property because it requires a container to be in good condition and not leaking, which is the only test in this library answered by looking, and no catalog field substitutes for somebody looking.