The Heavy Duty Cotton Ektorp 3.5 Seat Width: 98" (Not Regular 3 Seat) Sofa Cover Replacement is Compatible for IKEA Ektorp Three and Half Sofa (Dark Gray)
Ektorp sectional measurements not included on the Ikea website : r/IKEA
IKEA Ektorp, 2 Seater sofa with chaise longue cover with piping - Bemz | Bemz
How We Supersized Our IKEA EKTORP Sofa - Driven by Decor
Amazon.com: Comfort Works Custom Karlstad Sofa Cover, Slipcover Replacement for IKEA Karlstad Sofa (Grey Tweed) : Home & Kitchen