# GU-21-Penn Union-Grounding Clamps

**Manufacturer:** Penn Union  
**MPN:** `GU-21`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Penn Union |
| Manufacturer name | Penn Union |
| Manufacturer | Penn Union |
| CategoryL1 | Connectors, Cordsets & Terminals |
| CategoryL2 | Grounding |
| CategoryL3 | Grounding Clamps |
| Extra Product Name | GU-21-Penn Union-Grounding Clamps |
| Weight | 1.585 |
| WeightUnit | lbs |
| Weight_Attrib | Net Weight |
| atoms | 1 |
| keywords | Grounding Clamps-Grounding-GRND |
| moq | 1 |
| MPN | GU-21 |
| multiple | 1 |
| qtyInStock | 0 |
| SKU | GU-21-PENU |
| snippet | Grounding Clamps |
| tierMinQty1 | 1 |
| tierPrice1 | 154.61 |
| Manufacturer Part Number | GU21 |
| Item Number | GU-21 |
| Product Series | GU |
| Family Series | Penn Union Grounding, GU Series |
| Number of Conductors | 1, 2 |
| Maximum Conductor Size | 250 kcmil |
| Minimum Conductor Size | 2/0 sol. |
| Material | Bronze |
| Compression Style | Split Frame U-Bolt Clamp |
| Conductor Size Range | 2/0 sol. - 250 kcmil |
| For Use With | Pipe |
| Mounting | Direct on Pipe |
| Direct Burial | Yes |
| Approvals | cULus |
| RoHS | No |
| Net Weight | 1.585 lbs |
| Gross Weight | 1.585 lbs |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Galco | GU-21-PENU | 154.61 | 1 | None | 1 |

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Structured data: `/python/html6/product/500/231000000/231441000/part_--GU21---PennUnion--47efc8491e.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp