We build both exterior and interior access doors. Our exterior access doors are made 100% from Cellular PVC with no wood on them to rot over time. On our standard style the door is ¾” thick, the jambs are ¾”x3½”, the sill is 1¼”x3½” and we use 180 style brickmould for the trim. We use solid brass hardware and stainless steel fasteners on all areas that are exposed to prevent rusting. Call us at 1-800-366-8239 for information about our exterior doors. Interior MDF Doors Our interior access doors are made from 1-3/8” thick MDF with 4-9/16” wood door jambs with Q-Lon weather-stripping on all 4 sides. They are available as a standard plain door or it can be a raised panel design. We offer many options on our doors. You are not just limited to one style to choose from. As with all of our products they can be custom built to fit your needs. Call us at 1-800-366-8239 for information about our interior doors or download our Interior Access Door Brochure. Email us or call us at 1-800-366-8239 for a quote or if you have any questions about our products.