STOP! IMPORTANT INFORMATION
Warning: Prior to starting the install process, please check to make sure your kit includes the correct part #3 shown on the exploded view of the components as we have had a few customers get the wrong part. The inside diameter (larger side) of the step down coupler should be 4 inches as shown on this picture. If the larger side of the coupler included in your kit is 3.5 inches, you will need to contact us to get the correct replacement component for the kit which is part number AI1865C-01. You can request this replacement component via email at email@example.com or by calling us at 909.232.8900.