Power Windows were offered during the 1949-1950 model run on Kaiser Virginians (trico vacuum), 1949-50 Kaiser Convertibles (Dura hydraulic) and 1951 Frazer Manhattan Hardtops and Convertib les (Trico on hardtops, Dura on convertibles). While the initial order guide Confidential Bulletin for 1949 model year car s showed power windows may have been available for Frazer Manhattan 4-door sedans as an extra cost option , none have surfaced and factory documents suggest it was only limited to Frazer convertibles.