Single Seat: A to A measures 35-55 inches
MEDIUM: 2 SEATER
Two Seater: A to A measures 56-71 inches
Three Seater: A to A measures 72-93 inches
A to A measures 94-118 inches
L-Shaped and U-Shaped sofas require more than one cover. Split your sofa into sections and measure each one. So for example, if you have an L-Shaped Sofa and A-A measures 40in and B-B measures 65 in. You need to order 1 x 1-Seater and 1 x 2 Seater.