Large T-Molding Unfinished Red Oak Trim is great to finish out your flooring project. T-molding fills the gap when transitioning between two floors. Large T-molding is used for larger gaps between two floors. It works great on solid hardwood, engineered hardwood, laminate, tile, and vinyl flooring. Why use coordinating trim that cost way too much. Coordinating trim is just what it sounds like. It doesn’t quite match, it coordinates. Unfinished T-molding is great if you are going to Stain it to match trim you already have or flooring you are installing.