| Connection Size 1 | : | 4 in |
| Connection Size 2 | : | 6 in |
| Connection Sizes (Custom) | : | 4~6 in |
| Connection Type 1 | : | Snap Lock |
| Connection Type 2 | : | Snap Lock |
| Connection Types (Custom) | : | Snap Lock~Snap Lock |
| Depth | : | 6.5 in |
| For Pipe Size | : | 4~6 in |
| For Use With | : | Gas Appliance |
| Fuel Type | : | Natural Gas~Liquid Propane |
| Function Type | : | Increaser |
| Installation / Mounting Type | : | Concealed |
| Length | : | 1 in |
| Material | : | Galvanized Steel~Aluminum |
| Operating Temperature Rating | : | 470 F |
| Outside Diameter | : | 6.5 in |
| Package Quantity | : | 1 |
| Product Family | : | RV Series |
| Product Type | : | Increaser |
| Vent Type | : | Type B |
| Venting Category | : | Category I |
| Width | : | 6.5 in |
The Selkirk® RV Series Gas Vent Increaser is engineered to connect a 4-inch Type B gas vent to a 6-inch vent section. It is intended for use with Category I natural gas or propane-fired appliances such as furnaces, boilers, and water heaters.This fitting provides a reliable transition between different vent sizes while maintaining proper draft and system integrity for residential and light commercial venting applications.