Z-Flex 4" Vent Termination Coupling with Screen (model: 2SVSTPF04) for gas burning category III appliances - rated AL29-4C is used with a 4" 90 Degree Elbow for venting to the outside normally for a vertical installation for venting to the outside normally for a vertical installation. This coupling with screen keeps things from entering your venting system and is the last piece attached to the elbow on the outside.

• Model: 2SVSTPF04
• 4" Vent Termination Coupling with Screen gas burning category III appliances
• rated AL29-4C
• Used with a 4" 90 Degree Elbow for venting to the outside normally for a vertical installation
• Prevents debris from entering your venting system
• The last piece attached to the elbow on the outside