Short answers to the questions that usually decide a purchase.
No. Search links can show OEM and aftermarket. Read the seller title and packaging photos. Prefer the exact OEM number when possible.
Wrong learn-button era, DIP/white-button exceptions, or a receiver that needs an external antenna / Security+ 2.0 remote. Start with the learn-button guide.
No. Different connector. Same for most cross-brand adapters — we do not recommend them.
Usually no. EveryDrop Filter 1–8 and Samsung DA29-* families have different housings.
1225 is a common dual-handle cartridge; 1255 is Posi-Temp shower. Do not swap by guesswork.
No. SkuFit is a reference site with affiliate shopping links.