The Embraer E-Jet family is a series of four-abreast, narrow-body, short- to medium-range, twin-engined jet airliners designed and produced by Brazilian aerospace manufacturer Embraer.
Embraer E-Jet family
Four-abreast seating in a Virgin Australia E190
An E190-E2 of Widerøe, its launch operator
The flight deck of a China Southern Airlines Embraer E-Jet series aircraft
A narrow-body aircraft or single-aisle aircraft is an airliner arranged along a single aisle, permitting up to 6-abreast seating in a cabin less than 4 metres (13 ft) in width.
In contrast, a wide-body aircraft is a larger airliner usually configured with multiple aisles and a fuselage diameter of more than 5 metres (16 ft), allowing at least seven-abreast seating and often more travel classes.
Four-abreast cross-section
Narrow-body Boeing 737-300 in front of a Boeing 777-300ER wide-body
Airbus A320 (foreground) and Boeing 737-900 (background), both narrow-bodies
Two-abreast Beech 1900