1 Birdwell Model BWMX Single-Package Explosion Proof Wall Mount Air Conditioners 1-2 Tons 2 Birdwell Model BWMX Single-Package Explosion Proof Wall Mount Air Conditioners 3-10 Tons 3 Birdwell Model BWMX18C1 18,000 BTUH-Single -Package Wall Mount Air Conditioner 1 1/2 Ton 4 Birdwell Model BWMDVD-CF Packaged Wall Mount Air Conditioners 8-40 Tons U L T I M A