Ladder Stabilizer Roof Stand Off Roof Zone 48589 Standoff Distance: 19" Standoff Width: 30" The best built and strongest Standoff / Stabilizer on the market for Contractors & Homeowners. Easy to install, put on or take off in seconds! Perfect for roofers, painters, general contractors, and homeowners! Rubber grips under Rung Brackets for superior grip on ladder, wont slide!