Venting

770-994 is a 5 inch by 8 inch rigid astrocap pipe adapter. This adapter is only required when using rigid DuraVent Pro pipe. Starter collar reducer 5x8 to 4x6 5/8 is needed with the adapter. This is an OEM DuraVent venting component.

946-771 is a flex to flex adapter with a diameter of 5 inches by 8 inches. Genuine OEM part

946-770 is a vertical flex additional floor kit. This kit includes a ceiling firestop and a firestop spacer that is used to prevent debris from falling into the firestop. Genuine OEM part

946-769 is a vertical flex extension kit with a diameter of 5 inches by 8 inches. This kit includes 20 feet of flex pipe with 10 spacers, 3 wall straps, flex to flex adaptor, hardware and instruction sheet. Genuine OEM part

946-772 is a 20 foot vertical flex kit with a diameter of 5 inches by 8 inches. This kit includes 20 feet of flex pipe with 10 spacers, 3 wall straps, ceiling firestop, firestop spacer, brackets, flex to rigid adaptor, roof support, 36 inch rigid...

To achieve the maximum rated efficiency. Genuine OEM part

To achieve the maximum rated efficiency of 60% HHV  Genuine OEM part

CT-3A-B is a Chimney Adapter for use with the DTS and DTO caps on the SL300 Series Pipe.

TR444 is a round termination cap with the storm collar. This is used on the SL400 series pipe. Genuine OEM Part

SL448 is a 48 inch section of straight chimney. This is used with the SL400 series pipe and has an inner dimension of 10 inches and an outer dimension of 13 inches. Genuine OEM Part

SL436 is a 36 inch section of straight chimney. This is used with the SL400 series pipe and has an inner dimension of 10 inches and an outer dimension of 13 inches. Genuine OEM Part

SL4 is a 6 Inch flue support section that is used with the SL400 series pipe. Genuine OEM Part

SL418 is a 18 inch section of straight chimney. This is used with the SL400 series pipe and has an inner dimension of 10 inches and an outer dimension of 13 inches. Genuine OEM Part

SL412 is a 12 inch section of straight chimney. This is used with the SL400 series pipe and has an inner dimension of 10 inches and an outer dimension of 13 inches. Genuine OEM Part

SL406 is a 6 inch section of straight chimney. This is used with the SL400 series pipe and has an inner dimension of 10 inches and an outer dimension of 13 inches. Genuine OEM Part

SL430 is a 30 degree elbow with offset and return. This elbow is used with the SL400 series pipe. Genuine OEM Part