[. . . ] It is recommended that a separate circuit serving only this microwave oven be provided. [. . . ] VENTING REQUIREMENTS A 3¹/" x 10" (8. 3 x 25. 4 cm) rectangular or 6" (15. 2 cm) round vent should be used. The total length of the vent system including straight vent, elbow(s), transitions and wall or roof caps must not exceed the equivalent of 140 ft (42. 7 m) for either type of vent. To calculate the length of the system you need, add the equivalent length for each vent piece used in the system. upper cabinet and side cabinet depth 15 " (40 . 0 c m) ' " (76. 0 cm) CABINET OPENING DIMENSIONS The grounded 3-prong outlet must be inside the upper cabinet. A B 30" (76. 2 cm) min. 2 ft (0. 6 m) + 6 ft (1. 8 m) straight = 8 ft (2. 4 m) E 3" (7. 6 cm) F A. 3 " x 10" to 6" (8. 3 x 25. 4 cm to 15. 2 cm) rectangular to round transition piece F. Vent extension piece, at least 3" (7. 6 cm) high Because Whirlpool Corporation policy includes a continuous commitment to improve our products, we reserve the right to change materials and specifications without notice. Dimensions are for planning purposes only. For complete details, see Installation Instructions packed with product. [. . . ] Vent extension piece, at least 3" (7. 6 cm) high Because Whirlpool Corporation policy includes a continuous commitment to improve our products, we reserve the right to change materials and specifications without notice. Dimensions are for planning purposes only. [. . . ]