The largest envelope measures 25.55 m (83 ft 9 in) in length and 14.4 m (47 ft 2 in) in width and achieved by Jagadeesh Pillai (India) in Varanasi, Uttar Pradesh, India, on 19 February 2017.The envelope was created at an event organised by the Joint Commissioner, Ministry of Industry and Govt of Uttar Pradesh to spread the awareness of industrial waste, its merits and demerits. The envelope was addressed to Guinness World Records complete with enough stamps to cover the size of the envelope.
That’s what we call in the industry “bastard size”