Majestic SB100 Fireplace Doors — Biltmore 50 Exact-Fit Doors
Fireplace Doors for the Majestic SB100
The SB100 is the flagship Biltmore — Majestic's 50-inch radiant wood-burning fireplace, with a factory-listed viewing area of 50 inches wide by 33 inches tall. Sixteen hundred fifty square inches. This is the fireplace architects specify for two-story great rooms and mountain-house walls, and it lives at a scale the stock door aftermarket simply does not serve. Above 42 inches of width, the shelf goes empty; at 50 x 33, every real door is a built door.
Confirm the model
The 50-inch opening makes the SB100 hard to mistake for its smaller siblings, the SB60 and SB80, but confirm anyway: the rating plate inside the firebox reads SB100 or SB100HB (herringbone interior). Behind a finished stone wall, the plate can be unreachable — a straight-on photo through our AI Fireplace Expert does the job without moving a stone.
What a 50-inch door demands
- Engineering for span. More than four feet of frame carrying glass must resist racking and sag through years of heat cycles. Structure is not optional at this width.
- Build-to-measure, period. Majestic lists a DM100 factory bi-fold for this model; beyond that single option, everything is made to order. Our doors are built to your measured opening — width at three heights, height at three positions, smallest numbers win, per the measuring guide.
- Prefab-safe mounting. Grand scale changes nothing about the rules: inside-fit installation, unmodified firebox, unblocked air paths. The SB100 is a listed zero-clearance appliance, not a masonry hearth.
- Design authority. At this size the door is the wall. Frame profile, finish, glass, and mesh are configured to your room in the configurator, with the price updating as you build.
Frequently asked questions
What size door fits a Majestic SB100? The factory-listed viewing area is 50" x 33". Doors at this scale are built to the measured opening rather than stocked.
Can I combine two stock doors across the opening? No. Paired doors leave a seam, gaps, and unsupported spans in the middle of your fire view. One frame, built to the full opening, is the correct answer.
Can I burn wood with the doors closed? Not with standard tempered glass — doors stay open during the fire. Ceramic glass is the option to discuss if closed-door burning matters to you.
Is the SB100 related to the Heatilator Icon 100? Both are Hearth & Home Technologies flagships listing a 50" x 33" opening class. Family resemblance or not, your door gets built to your tape measure.
Get your exact-fit SB100 door
Configure your SB100 door online for an instant price, backed by the Perfect Fit Guarantee, or talk to a specialist seven days a week — oversize openings are a specialty of the house. Made in the USA, built to your measurements.
More Majestic models we build doors for: MBU36 · R36 · SR36 · SR42 · BR36 · BC36 · SC36 · BR42 · MBU42 · MR42 · NVBR36 · ASH36 · ASH42 · SA36 · SA42 · SB60 · SB80 · BE36 · BE42 · BC42 · MBUC36 · MBUC42 · all fireplace models