Case Toilet Seat Adapter – Upgrade Your Vintage Case Toilet

Retrofit Seats offers a precise, 3D-printed Case Toilet Seat Adapter Kit that lets you install modern toilet seats on classic Case lowboy toilets, including the 1000, 1100, and 3000 series.

Built for strength, compatibility, and easy installation, our adapter helps you keep your original Case toilet working without the hassle of finding discontinued seat models. Each kit is carefully printed, inspected, and packaged to ensure a perfect fit.

Ditch the search for an original Case toilet seat—upgrade confidently with Retrofit Seats.