Interior Doors A large selection of interior door designs and door species are available through BROSCO. Whether you are interested in a traditional interior door or creating your own custom interior door design, BROSCO will be your source for interior doors. Fir Interior Door Fir (F) As life goes through your home, you need the right doors to be part of it. Simpson's fir interior panel and bifold doors are created with the same level of care and craftsmanship that goes into every Simpson door. The inside of your home is to feel just right and we'll help you create that special atmosphere. Look for the panel, French, louver, bifold and the special Pantry and Chalkboard doors to choose from. Pine Interior Door Pine (WP) - Those who have a definite preference for the look and feel of pine can find the answer in Lemieux's range of doors! Traditional and timeless; they're designed to fit seamlessly into any decor. Made expressly for interior use, these versatile doors are available in numerous styles and designs from the New England classic model 1051 6 panel door to bifolds, louvers and French doors. Oak Interior Door Oak (OA) - Homeowners have long appreciated the striking, open grain of oak, as well as the rugged durability of the species. Simpson's Oak doors project an image of timeless appeal and enduring strength. The 6 panel, French and bifold doors are offered in various sizes.