Fortress Gravel Bags

The Fortress Gravel Bags conform to the pile and along bunker walls, creating a tight and constant seal. The Gravel Bags also work great along the face of the silage pile to keep air from migrating under the plastic.

 Fortress Gravel Bag Features:

• Easy to carry double handles.
• Conforms to the pile and along walls.
• No more tire wires cutting the plastic.
• Zip ties included.
• 12 year warranty on UV degradation.
• Sold in packs of 20 and 200.
• 36" in length when filled.
• Fill with ¾" rock.
• Weight: 35 lbs filled