STEP 1: MEASURE YOUR FURNITURE MEASURE WIDTH BETWEEN the ARMS MEASURE DEPTH OF SEAT FRONT to BACK MEASURE HEIGHT OF BACK TOP to BOTTOM STEP 2: COMPARE CUSHION SIZE TO FURNITURE MEASUREMENTS HEIGHT SSIMNNDIHL COMBINE THE HEIGHT & DEPTH MEASUREMENTS FOR TOTAL LENGTH. ADD 1” FOR COMFORT FOR THE PERFECT FIT, SELECT THE CUSHION THAT MOST CLOSELY FITS YOUR . MEASUREMENTS, UP TO 1/2” LARGER.