Product details:

This 3/4" (19 mm) tall profile CRL Deep U-Channel is for securing fixed panels of glass to the wall ceiling or floor. Widths suitable for 3/8" and 1/2" (10 and 12 mm) thick glass are available and are individually wrapped to protect the finish. The 3/4" (19 mm) tall profile Deep U-Channel can be also as the top channel in installations where the glass must be inserted into the top then lowered into the Regular U-Channel at the bottom of the enclosure. 144" (3.66 m) stock length.