The GLI series are optionally available front grills with TwistFix technology for the CALI loudspeaker series. The GLI grills fit the CALI6 speakers and are available in 3 versions: black (/B), white (/W) and paintable (/P).

The TwistFix system assembles the speakers grill through twisting. A bayonet-type locking with lips on the grill side gets fixed through insertion to slots on the speakers housing and giving it a partial turn. This system guarantees lifetime stable mounting while fixation can be done in record-breaking time.

For outdoor protection, these steel speaker grills are electroplated.