EAT-1/1 letterbox for door loudspeaker 1/1 AP stainless steel ESTA. Surface-mounted letterbox in accordance with DIN EN 13724 for audio door station as intercom in accordance with DIN EN 50486 in 1+n technology, made of matt brushed stainless steel, thickness 2 mm. Consisting of a square letterbox closed on all sides with drip edge as rain protection, door(s) with BK security lock including 2 keys and letter slot(s), perforated intercom grille, round bell button, nameplate(s) (changeable from the front) with LED lighting and door loudspeaker bracket with quick assembly. Note: Suitable electronics and loudspeakers required.