Amana AGDS902 Series Owner's Manual page 11

Duct Length Piece Equivalents
I
3¼ x 10 inch to 6 inch
transition -- 4½ equivalent
feet
I
3¼ x 10 inch to 6 inch 90
degree transition =
5 equivalent feet
3¼ x 10 inch 90 degree
elbow = 5 equivalent feet
, _ 3¼ x 10 inch flat elbow = ,
t I 12 equivalent feet
3¼ x 10 inch wall cap
(Unrestricted) =
0 equivalent feet
1 foot of 3¼ x 10 inch duct = 1 equivalent foot
1 foot of 6 inch pipe = 1 equivalent foot
6 inch to 3¼ x 10 inch
transition =
1 equivalent foot
6 inch to 31¼x 10 inch 90
degree transition =
5 equivalent feet
6 inch 90 degree elbow =
5 equivalent feet
6 inch45 degree elbow =
2½ equivalent feet
6 inch wall cap
(Unrestricted) =
0 equivalent feet
11