2-1/2in ID to 3in ID Silicone Transition Hose Tubing Coupler - Straight - Reducer - 3 in to 2-1/2 in ID - 3 in Long - Silicone - Black - Each

3-1/2in ID to 4in ID Silicone Transition Hose Tubing Coupler - Straight - Reducer - 4 in to 3-1/2 in ID - 3 in Long - Silicone - Black - Each

2-1/2in ID to 2-3/4in ID Silicone Transition Hose Tubing Coupler - Straight - Reducer - 2-3/4 in to 2-1/2 in ID - 3 in Long - Silicone - Black - Each

3in ID to 3-1/2in ID Silicone Transition Hose Tubing Coupler - Straight - Reducer - 3-1/2 in to 3 in ID - 3 in Long - Silicone - Black - Each

2-1/2in ID x 3in Long Silicone Straight Hose Tubing Coupler - Straight - 2-1/2 in ID - 3 in Long - Silicone - Black - Each

Silicone Hose 45 deg Elb 2-1/2in ID x 4-1/2in Lng Tubing Elbow - 45 Degree - 2-1/2 in ID - 4-1/2 x 4-1/2 in Legs - Silicone - Black - Each