Auto Metal Direct Vent Glass - Clear - LH or RH - 51-55 Chevy GMC Truck ('55 1st Series) Vent Glass - Clear - LH or RH - 51-55 Chevy GMC Truck ('55 1st Series) Vent Glass - Clear - LH or RH - 51-55 Chevy GMC Truck ('55 1st Series)