![Photo Hutterer & Lechner Gravel guard, d 150 [Code number: HL 160] (Russia)](/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBME51QWc9PSIsImV4cCI6bnVsbCwicHVyIjoiYmxvYl9pZCJ9fQ==--7e7cb310c53982b8f00564405d6d7d84b933da67/HL160-photo.jpg?locale=en)
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)](/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBclM2IiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--368f4c0977d12e574a6fcf5594b1bd78a70fa84f/hl_160-draft.jpg?locale=en)