B138 DUN Dunlop V-Belt Type_V-Belt 4L 820 / 2083 La

4L 820 / 2083 La Garden Belt

3L 420 / 1067 La Garden Belt

and the second number is the internal length in mm

5L 610 / 1549 La Garden Belt

3L 430 / 1092 La Garden Belt

B138 DUN Dunlop V-Belt Type_V-Belt 4L 820 / 2083 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.