Abstract: A collecting electrode panel assembly comprises a plurality of collecting electrode plates disposed in successively aligned relationship beneath and suspended from an electrode support member supported by the housing of an electrostatic precipitator, such that the collecting electrode plates making up the collecting electrode panel assembly extend downwardly in a substantially vertical plane into the precipitation chamber defined within the housing. Each of the plates has a pair of spaced end members and a central web portion which extends between and interconnects the spaced end members. Each end member has an edge surface extending substantially transverse to the central web portion thereof. A plurality of suspension lugs are mounted to the electrode support member and are disposed therealong such that a suspension lug extends outwardly therefrom adjacent each of the end members of the plates. A fastener is provided for mounting each end member to one of the suspension lugs.