Material
ASTM-A653 CS Type B Galvanized Steel, 30GA G-30 Coating LFQ Chemical Treatment ******Also Available in 28GA, 26GA and 24GA

Assembly
Assembled w/ C-115 2/16 zinc coated steel rivets

Features
241: A 1/8″ Hem on both collar and register openings. A Royal plaster frame may be used to hang the boot in a ceiling mount.

241F: An 1″ Outboard flange around the perimeter of the register opening with a 5/8″ drywall edge. Royal boot rails may be used to hang the boot in a ceiling mount.