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(this LINK will take you to a website with a variety of bead examples))
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drywall bead at curtain wall window frame, resulting in a 1/2″ reveal
finished aluminum breakshape corner
Shadow bead at concrete wall
mud-on aluminum shadow bead installed against mdf baseboard
(Shadow Bead is used to create a reveal effect when butting up to door jams, base trim, ceilings, light boxes and other interior architectural components.)
J bead at baseboard