Sierra Flame by Amantii Through The Roof Adaptor Kit for Emerson 48" Gas Fireplace

Through The Roof Adaptor Kit (2 Adaptors: 4"Flex to 4" Hard & 6"Flex to 6 5/8" Hard) 

Size: 4 Inch
One 4" flex to 4" rigid vent adapter
One 6" flex to 6" rigid vent adapter
Flexible venting to rigid venting adapters

*Venting Requirements: This unit requires venting pipe with an inner diameter of 4 Inches. Please see the Venting Components section on this page if available for venting pipe that must be used with this unit.