C280 DUN Dunlop V-Belt Pitch_ H (12.7mm) 4L 400 / 1016 La

4L 400 / 1016 La Garden Belt

and the second number is the internal length in mm

5L 820 / 2083 La Garden Belt

3L 350 / 889 La Garden Belt

3L 480 / 1219 La Garden Belt

C280 DUN Dunlop V-Belt Pitch_ H (12.7mm) 4L 400 / 1016 LaTraditional V Belts are manufactured with cross sections Z, A, B, C & D sections with a range of over 500 lengths currently available. V Belts for industrial use are designated both to RMA standard e. g. A52, where the letter designates its cross section and the number corresponds to a nominal internal length in inches and to DIN standard e. g. 13x1320Li, where the rst number denotes the width in mm, and the second number is the internal length in mm.