Square or rectangular to round transitions can be manufactured to customer specifications, allowing them to be used with Duct Incorporated's modular, clamp together ducting system. Raw or flanged connections are available (specify flange hole pattern).

Style 189 - Rectangular to Round Transitions

Also available with flanged connections.
Specify flange pattern.
Flange blank of hole pattern is not provided.
Standard flange material to 1 - 1/2 x 3/16” angle.

X=material / 1 = galvanized / 2 = galvaneal / 3 = black metal / 4 = 304ss / 5 = 316ss
dd=diameter