Bosch HMVP052U Installation Instruction

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* If a rectangular-to-round transition adapter is used, first 
make sure the damper hinge of the microwave swings 
freely. If necessary, cut the damper to fit, using the tin 
snips, in order to allow free movement.
Equivalent lengths of duct pieces are based on actual 
tests and reflect requirements for good venting 
performance with any vent hood.
Duct Pieces
x
Number used
=
Equivalent Length
Rectangular-to-Round Tran-
sition Adaptor*
5 ft (1.5 m)
x
=
Wall Cap
40 ft (12.2 m)
x
=
90° Elbow
10 ft (3 m)
x
=
45° Elbow
5 ft (1.5 m)
x
=
90° Elbow
25 ft (7.6 m)
x
=
45° Elbow
5 ft (1.5 m)
x
=
Roof Cap
24 ft (7.3 m)
x
=
Straight Duct 6" (152 mm 
Round or 3 1/4" x 10" 
(82 x 254 mm) Rectangular
1 ft (0.3 m)
x
=
Total Ductwork =