ATLAS vs. KSSU Galley Standards vs. Passenger Seat Pitch & Width
Comparing 2 standards across 11 specifications. 11 key differences identified.
Commercial aircraft galleys adhere to two non-interchangeable international standards for catering service trolleys and Standard Unit (SU) boxes: ATLAS (dominant on ~80% of global airlines, 305 mm cart width) and KSSU (used by KLM, Swiss, SAS, UTA, 301 mm cart width).
Airline seating comfort is defined by Seat Pitch (the distance from any point on a seat to the exact same point on the seat in front, typically 28" to 32" in Economy) and Seat Width (cushion width between armrests, 17" to 18.5").
Specification Comparison Table
11 Parameters| Parameter / Spec | ||
|---|---|---|
|
Dominant Standard
|
ATLAS (used by ~80% of world airlines including Lufthansa, BA, Emirates) | — |
|
KSSU Origin
|
KSSU Consortium (KLM, SAS, Swissair, UTA) | — |
|
Full-Size Trolley Length
|
ATLAS: 810 mm (31.9") vs. KSSU: 815 mm (32.1") | — |
|
Trolley Width
|
ATLAS: 305 mm (12.0") vs. KSSU: 301 mm (11.8") | — |
|
Trolley Height
|
ATLAS: 1,030 mm (40.5") vs. KSSU: 1,030 mm (40.5") | — |
|
Interchangeability
|
Strictly incompatible — ATLAS boxes and meal trays do not fit KSSU carts | — |
|
Standard Economy Pitch
|
— | 30" to 32" (76–81 cm) |
|
Low-Cost Carrier Economy Pitch
|
— | 28" to 29" (71–74 cm) |
|
Premium Economy Pitch
|
— | 38" (96.5 cm) |
|
Long-Haul Business Class Pitch
|
— | 60" to 80" (152–203 cm, Lie-Flat Bed) |
|
Standard Economy Seat Width
|
— | 17.0" to 18.5" (43.2–47.0 cm) |