Measure and Lower the header rail. Pull the shower door shut and lengthen your tape measure from a person side to the opposite. Mark the scale on the frame header and use your hacksaw to cut it to dimension. Clean down the Uncooked edge using a metallic file.[13] X Investigation https://connerxxtpk.blogolenta.com/29749424/shower-door-installation-in-needham-ma-things-to-know-before-you-buy