How to Install Toggle Bolts
2021 09 22 nbsp 0183 32 Drywall systems have 3 1 2 inches of hollow space so the longest toggle bolt you d want to use here would be 3 inches Required Drill Hole Size Drill hole size is the diameter of the hole you need to drill to accommodate the diameter of the closed pair of wings Drill hole size is always larger than the diameter of the bolt