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![Photo Hutterer & Lechner Gravel guard, d 150 [Code number: HL 160] (Russia)](/system/products/photos/000/004/313/original/hl_160-photo.jpg?1461296256)
Gravel guard HL 160 has diameter of 170 mm. The gravel guard is used when you need ensure water drainage on the multi-layered roof with waterproofing. The HL Company ensures that the gravel guard will serve at least 50 years.
| Diameter | Material | Weight |
|---|---|---|
| DN, mm | gr | |
| 170 | polypropylene | 140 |
Download data sheet: 
Gravel guard HL 160
![Draft Hutterer & Lechner Gravel guard, d 150 [Code number: HL 160] (Russia)](/system/products/drafts/000/004/313/original/hl_160-draft.jpg?1421951076)