Complete your interior doors and windows with the 2-1/4″ X 14′ Primed MDF Casing – Profile 356. This slender, classic casing profile offers a clean and refined look that works beautifully in Craftsman, Traditional, Farmhouse, and Contemporary interiors. Its narrower 2-1/4-inch width is ideal for tighter door and window openings or as a companion trim piece alongside wider baseboard profiles.
Made from high-quality medium-density fiberboard (MDF), Profile 356 features a smooth, factory-primed surface that is ready for paint right out of the box. Unlike solid wood casing, MDF resists warping, splitting, and grain irregularities — delivering a consistently flat, paintable surface that holds paint beautifully for a long-lasting finish. It cuts, miters, and copes just like wood trim, making it easy for both professionals and DIYers to install.
At 14 feet per piece, Profile 356 casing minimizes seams around standard door frames, giving your trim work a clean, continuous look. Whether you’re updating builder-grade trim, matching existing profiles, or completing a new construction project, this casing provides a polished, professional result at an everyday low price.
Available at Builders Surplus in Louisville and Florence, KY — proudly serving homeowners, contractors, and remodelers throughout the Louisville, Florence, and Cincinnati metro areas.
Features & Benefits
- Profile: 356 — classic slender casing for doors and windows
- Dimensions: 2-1/4 in. wide x 14 ft. long (actual: 19/32 in. x 2-1/4 in.)
- Material: Primed MDF (medium-density fiberboard)
- Surface: Factory-primed smooth finish — paint-ready
- Installation: Cuts and installs like wood; standard miter and cope cuts
- Ideal for: Interior door casing, window casing, decorative wall trim
- Style: Coordinates with Colonial baseboard and other MDF profiles






