Add a clean, classic touch with the 121MUL MDF Clamshell Casing (9/16" x 2" x 7'). Made from high-density fiberboard, this casing features a smooth, paintable surface and crisp detailing that frames doors, windows, and cabinetry beautifully. Easy to cut, paint, and install, it’s a versatile trim solution for both modern and traditional spaces. Durable and cost-effective, Clamshell MDF casing provides a polished, professional finish that enhances any interior.

Why choose Clamshell MDF casing?

Clamshell MDF casing offers timeless simplicity with the strength of engineered MDF. It’s paint-ready, resists warping and splitting, and delivers an affordable alternative to solid wood—making it a smart choice for long-lasting style.