BILT. INSTALLATION MADE EASY. What is BILT? BILT is a revolutionary new way to assemble and install Corbin Russwin products! BILT removes the guess-work for a trouble-free installation. The BILT program features easy-to-navigate screens in a three-dimensional format. Zoom in, zoom out or rotate the image to see the installation from all angles! Find out everything you need to know about your installation before you head out to the job site. Simplify the installation of these Corbin Russwin products with the BILT App! Electronic Access Control - IN100 Cylindrical Lock - IN100 Mortise Lock - IN100 Exit Device - Mortise / Rim Type - IN120 Cylindrical Lock - IN120 Mortise Lock - IN120 Exit Device - Mortise / Rim Type - IN220 Cylindrical Lock - IN220 Mortise Lock - IN220 Exit Device - Mortise / Rim Type Mechanical - FE6600 Series Multi-Point Lockset - FE6600 Series Factory Installation Download the free BILT App from the Apple App Store or from Google Play.