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In page Mexicana de Aviación (1921–2010):

"

Mexicana offered "Clase Elite", or business class, on all flights. Warm meals were served on all domestic and international flights longer than 40 minutes. Passengers also received snacks throughout the flight, selection of meals, and refreshments. The seats on the Boeing 767-300ER were 23 inches across and recline 160°; while seats on the Airbus A320 were 22 inches across and recline approx 100° degrees.[citation needed]