Master Flow 3-1/4 in. x 10 in. x 7 in. Hood Transition Fan Boot FB3.25X10X7 - The Home Depot

Master Flow 3.25 in. x 12 in. x 3 ft. Half Section Rectangular Stack Duct RD3.25X12X36 - The Home Depot

Master Flow Replacement Power Vent Motor for PR3, and PG3 Series Vents PVM115 - The Home Depot

Master Flow 3-1/4 in. x 10 in. x 7 in. Hood Transition Fan Boot - Yahoo Shopping

Everbilt 7 in. x 8 ft. Semi Rigid Duct HP Expand Duct EVER010 - The Home Depot

Master Flow 10 in. x 3-1/4 in. to 6 in. 90-Degree Stack Boot 90SB10X3.25X6 - The Home Depot

Master Flow 18 in. to 18 in. to 18 in. Full Flow Tee FFT18X18X18 - The Home Depot

These Master Flow 7 in. Stack Boots create a straight-line transition between round pipes or insulated flexible ducts and rectangular stack ducts.

10 in. x 3.25 in. to 7 in. Stack Boots

Master Flow 60 in. S-Cleat CS60 - The Home Depot

Broan 7-in Galvanized Steel Straight Stack Duct Boot in the Duct Transitions & Connectors department at

Master Flow 7 in. Flexible Duct and Sheet Metal Connector Splice Collar