This VENT WINDOW Glass is tempered and fits all 1951-1955 (1st Series) Chevrolet & GMC Trucks. Glass is available in: C=Clear, GR=Green Tinted, GY=Dark Gray. Specify color when ordering. Two required per truck. Glass fits all trucks, including Cab Over Engine (COE). Replaces GM# 3695478, 3704387 NOTE: Special freight charges are required for glass due to special packaging and handling. Call or email us for a freight quote.