Exact model before family name
We record the SKU printed on the appliance label. Marketing families and color names are secondary because internal parts can change between series.
OUR EVIDENCE STANDARD
Useful certainty.
Visible limits.
FitCheck Lab is a research-based publication. We do not claim to own or hands-on test every appliance. Our value is disciplined source work, model normalization and transparent uncertainty.
Primary sources before marketplace copy
Current US manufacturer product pages, manuals and official accessory lists form the evidence base. Marketplace titles are treated as claims to verify, not facts to repeat.
Confirmed, excluded and unresolved
We separate explicit manufacturer compatibility, explicit exclusions and cases where the available record is incomplete. Unknown is a valid result.
A visible verification date
Every model record carries its last-check date. We revise records when a manufacturer changes a product page, part number or model family.
SOURCE HIERARCHY
Evidence has an order.
- 1 Current US manufacturer accessory record
- 2 Current US product page or instruction manual
- 3 Manufacturer support article or part catalog
- 4 Authorized retailer record, clearly labeled
- 5 Community reports used only to find questions
WHAT WE DO
Transform fragmented records into a decision.
We normalize model numbers, connect accessory part numbers, identify explicit exclusions and explain why a generic listing may still be risky.
WHAT WE DO NOT DO
Borrow proof we did not create.
We do not republish Amazon customer photos, copy customer reviews or write “we tested” when our conclusion comes from documents.
SEE THE METHOD IN USE