National Hardware #N131-490 Bright Galvanized Outdoor Single Roller (7-PACK) Sliding Barn Door Stay Roller, Side-Mount, Heavy-Duty Slots in frame provide adjustment for holding doors against wood walls or posts Designed for use as a heavy-duty guide on large Hardened steel bolt for greater strength Offers sturdy steel frame construction Includes nail and lag screw holes sliding doors up to 3-3/4" thick Side mount - adjustable Finish - Galvanized National Hardware's Stay Roller is designed for use on large sliding doors up to 3-3/4 inches thick Manufactured from galvanized steel for superior durability with Delrin wheel Wheel is reversible, and can be used from either side of frame. Securing and stabilizing DIY projects is an important step in building something that can withstand a lifetime of use. Additionally, the Weatherguard (TM) Protection coating withstands harsh weather conditions and protects the hardware from premature failure. National Hardware's Stay Roller is designed for use on large sliding doors up to 3-3/4 inches thick Manufactured from galvanized steel for superior durability with Delrin wheel Wheel is reversible, and can be used from either side of frame Best used in exterior outdoor applications for exterior doors Coated with Weatherguard? Protection to withstand harsh weather conditions and to prevent corrosion National Hardware's Lifespan? Limited Lifetime Warranty Meets ANSI/BHMA A156.14