Classic pass-through letterbox for the 6+n system with stainless steel front, V4A brushed. Exclusively for mounting on existing flush-mounted housings from the TL 411 series. , Components:, . Door loudspeaker CTLE 051-. with integrated loudspeaker and microphone, voice volume adjustable, . 2 call buttons with backlit nameplate, replaceable on the front, . 2 letter slots with handle bar
