Freud 99-277 1-7/8" (Dia.) Entry & Interior Door Router Bit System redefines door construction with a patented, field-tested approach to true mortise and tenon joints. Built for woodworkers who demand reliability, this system yields joints that lock together with precision and stay tight for the life of the door.

Engineered for thicker doors, the 99-277 set is designed to mill doors that are 2" or 2-1/4" thick. It sits within Freud’s dedicated Entry & Interior Door System, pairing rail and stile bits that are perfectly matched to produce exceptionally accurate joints straight from the cut. When you need even stronger joints, you can remove the top section of the rail bit to create long tenons of any length, expanding your design options without sacrificing fit or strength.

• Patented, precise mortise and tenon joints achieved with matched rail and stile bits that deliver consistent shoulders and tight joints out of the box.
• Long tenon capability by removing the top section of the rail bit, enabling longer tenons for maximum glue surface and superior joint strength.
• Thick-door versatility tailored for 2" and 2-1/4" thick doors, ideal for premium interior doors or sturdy exterior-grade options.
• Versatile material compatibility suitable for milling both hardwood and softwood door parts, broadening your workshop possibilities.

Compared to traditional joinery approaches, this system emphasizes repeatability and speed without sacrificing strength. You’ll spend less time dialing in joints and more time producing durable doors—whether you’re outfitting a home renovation, a custom build, or a shop run with multiple doors to match.

What it enables you to do: craft robust entry and interior doors with true mortise and tenon joints, create doors that stand up to daily use, and achieve professional results with a router setup you can rely on for years. It’s an ideal solution for professional woodworkers, cabinet shops, renovation specialists, and serious hobbyists who value accuracy, consistency, and the ability to work with both hardwood and softwood door components.