How Greybough documents product evidence
Product details are presented with links to the specific materials that support them. A manufacturer source shows what the manufacturer publishes; it does not establish independent performance or suitability for a particular home.
Manufacturer-provided information
Each product card names its source type, such as a product page, specification sheet, catalog, warranty page, or user manual. The adjacent citation links to that source and states which product detail it supports.
Firsthand observations
A firsthand observation would need a documented product, observation, and method. No such Greybough product test or installation record is documented in the reviews linked here, so they do not claim firsthand testing.
What a product citation does not establish
Unless the linked source explicitly supports it, room-specific fit, installation quality, user outcomes, comparative ranking, current local pricing, and availability remain unverified. Review cards flag these limits instead of filling them with assumed measurements, ratings, or experiences.