- 1 piece heavy gauge rock screen; mine is 15 × 54 inches with a 3-inch grid
- 2 heavy-duty 4-inch hex bolts, ½-inch diameter
1. Position trellis. Measure rock screen grid and determine spacing for bolts so the top of your trellis hangs level and with its weight evenly distributed. Drill pilot holes for bolts 8 to 10 inches apart. Using wrench, tighten bolts, securely anchoring them 2 inches into the supporting beam with the remaining 2 inches and head of each bolt sticking out.