PRODUCT MODEL NUMBERS OVERALL DIMENSIONS
VENTING REQUIREMENTS
MH3184XP
MH3185XP
Electrical: A 120-volt, 60 Hz, AC-only, 15 or 20
amp electrical supply located in the upper cabinet
as close as possible to the microwave oven hood.
A time-delay fuse or circuit breaker and separate
circuit is recommended.
®Microwave Hood Combination
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. Specifications subject to change without notice.
Ref. 8206327
05-30-06
Recommended standard fittings
If the existing vent is round, a rectangular-
to-round adapter must be used and a
rectangular 3" (7.6 cm) extension vent
between the damper assembly and the
adapter must be installed to prevent sticking
of the exhaust damper.
1 - 3-1/4" x 10"
90° elbow = 25 ft. (7.6 m)
1 - wall cap = 40 ft. (12.2 m)
8 feet straight = 8 ft. (2.4 m)
Length of
3-1/4" x 10" system = 73 ft. (22.2 m)
6" (15.2 cm) vent system
3-1/4" x 10" (9.5 cm x 25.4 cm) vent system
1 - transition = 5 ft. (1.5 m)
2 - 90° elbows = 20 ft. (6.1 m)
1 - wall cap = 40 ft. (12.2 m)
8 feet straight = 8 ft. (2.4 m)
Length of 6" system = 73 ft. (22.2 m)
3-1/4" x 10"
90° elbow
90° elbows
transition
wall cap
6 ft. (1.8 m)
2 ft. (0.6 m)
3-1/4" x 10"
to 6" = 5 ft.
3-1/4" x 10"
roof cap = 24 ft.
3-1/4" x 10"
90° elbow = 25 ft.
90° elbow
6" = 10 ft. 3-1/4" x 10"
wall cap =
40 ft.
3-1/4" x 10"
flat elbow =
10 ft.
45° elbow
6" = 5 ft.
Recommended vent length
Use 3-1/4" x 10" (9.5 cm x 25.4 cm) rectangular or 6" (15.2 cm)
round vent. The total length of the vent system including
straight vent, elbow(s), transitions, wall or roof caps must not
exceed the equivalent of 140 feet (42.7 m) of 3-1/4" x 10"
(9.5 cm x 25.4 cm) rectangular or 6" (15.2 cm) round vent.
For best performance, use no more than three 90° elbows. To
calculate the length of system you need, add the equivalent feet
for each vent piece used in the system. See examples below.
NOTE: There must be
at least one 2" x 4"
(50.8 cm x 101.6 cm)
wall stud and minimum
3/8" (9.5 mm)
thickness drywall or
plaster/lathe within
cabinet opening. Must
be able to support 150
lbs. (68 kg).
Roof venting Wall venting
roof cap
3-1/4" x 10"
(9.5 cm x 25.4 cm)
through-the-roof
3-1/4" x 10"
(9.5 cm x 25.4 cm)
through-the-wall
wall cap
CABINET OPENING DIMENSIONS
For wall or roof venting methods:
If the wall exhaust method is chosen, be sure that
there is proper clearance within the wall for the
damper to fully open.
Wall and roof caps must have back-draft damper.
We recommend:
✔using rigid metal vent.
✔that length of vent and number of elbows should
be kept to a minimum to provide efficient
performance.
✔that size of vent should be uniform.
✔using duct tape to seal all joints in the vent
system.
✔using caulking compound to seal exterior wall or
roof opening around cap.
✔two elbows should not be installed together.
We do NOT recommend:
✔flexible metal vent.
NOTE: If flexible metal vent must be used, calculate
each foot of flexible metal vent as two feet of rigid
metal vent. Flexible metal elbows count twice as
much as standard elbows.
66" (167.6 cm)
minimum from
floor to top of
wall mounting
plate.
30" (76.2 cm) from bottom edge of upper
cabinet frame or, if frameless, from cabinet's
exterior bottom surface to cooking surface.
Space between cabinets must be 30" (76.2 cm)
minimum and be free of obstructions. For 36"
(91.4 cm) and 42" (106.7 cm) openings, accessory
kits are available from your dealer.
12" min. to 14" max. (30.5 to 35.6 cm)
cabinet depth
17-1/8"
(43.5 cm)
29-7/8"
(75.9 cm)
15-3/8" (39.1 cm)
15-7/8"
(40.3 cm)
6 ft. (1.8 m)
2 ft. (0.6 m)
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