Harger Lightning Protection Concealed Base Assembly
The Harger Lightning Protection model A156-12 is an aluminum concealed base designed for mounting air terminals in lightning protection systems. The 1/2 in. diameter, 12 in. long riser bar accommodates all Class I and Class II conductors, and the assembly supports both vertical mounting on ridge boards and roof trusses and horizontal mounting on flat roof decks or other flat surfaces. Concealed base assemblies provide a clean, low-profile installation that integrates with the roofing structure.
Key Features
- Accepts all Class I and Class II conductors for versatile system compatibility
- Aluminum construction for corrosion resistance and lightweight handling
- 1/2 in. diameter riser bar for standard air terminal compatibility
- 12 in. riser bar length provides clearance above roofing surfaces
- Mounts vertically on ridge boards or roof trusses
- Mounts horizontally on flat roof decks and other flat surfaces
Specifications
| Attribute | Value |
|---|---|
| Model | A156-12 |
| UPC | 80847500484 |
| Material | Aluminum |
| Riser Bar Diameter | 1/2 in. |
| Riser Bar Length | 12 in. |
| Conductor Compatibility | Class I and Class II |



