Spring set suitable for flush-mounted box type UPK 10, GL UG, UG 90 and UG 900 for installation in cavity walls.
Flush-mounted housingMetalSuitable for WS 900 series flush-mounted intercom stations
UG 900
Flush-mounted housingMetalSuitable for the WS* series flush-mounted intercom stations listed belowReduced installation depth
UG 901