Description
The Superior HTFLO-EK-4.5 60 Inch HeatFlo Flex Extension Kit is designed to extend the reach of compatible HeatFlo convection air systems for improved installation flexibility. This extension kit is required when the distance from the bottom of the register to the top of the appliance exceeds 60" to 65", ensuring proper airflow performance and system efficiency. By providing additional length, it helps maintain effective heat circulation even in more complex or taller installation configurations.
Built for compatibility with Superior HeatFlo systems, the HTFLO-EK-4.5 Extension Kit is engineered to support consistent and reliable convection performance. Its flexible design allows for easier routing and integration within the installation space while maintaining optimal air movement. This makes it an essential accessory for achieving proper HeatFlo system functionality in extended-distance applications.
Included
- 4.5" Diameter Flex Vent, 60” Compressed
- Instruction Sheet
Features
- Extension Kit is required when the distance from the bottom of the register to the top of the appliance exceeds 60" to 65".
Specifications
| Model Number | HTFLO-EK-4.5 |
| Catalog Number |
F4578 |
| Size | 4.5" (Diameter) |
| Compatible HeatFlo Kits | HTFLO-DV45 HTFLO-DV55 HTFLO-VF45 HTFLO-VF55 |
| Compatible Fireplaces | DRL2045 DRL2055 DRL3545 DRL3555 DRL4048 DRL6048 VRL3045 VRL3055 VRL6048 |
About The Manufacturer


