By special order only. This retrofit safety tether works with JBL press-in-grille type ceiling loudspeakers (Control 10 Series, 20 Series, 40 Series, and 226). If a grille were to work its way loose, the tether is intended to catch it and keep it from falling to the ground where it could otherwise cause damage or harm.

The tether consists of a short length of flammability-rated aramid tether cord and an adhesive tab. The thread end attaches through the perforated holes on the press-in grille, and the tab has a peel-off adhesive, making it easy for the installer to stick it onto the speaker baffle.