The GLI series are optionally available front grills with TwistFix technology for the CIRA and CALI loudspeaker series. The GLI grills fit the CIRA5 and CALI4 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.