W x 1-3/8 in.
weight capacity per hardware set - see instructions •Kit comes with all the parts needed to hang a door up to 36 in. W x 1 in. diameter •Thermoplastic wheels for a smooth and quiet rolling operation •Do not mount rail brackets directly onto a drywall surface, always mount brackets to solid wood, predrilling the holes is advisable to avoid splitting the wood There is a barn door hardware kit available for virtually any space! With movable brackets for easy, universal installation and sturdy construction that supports a maximum recommended 250 lbs. H x 4-3/4 in.