It's possible to used a Bulb Seal on the edge of the heavy glass panels, which acts as a rubber bumper, and dispense with jamb material altogether.

Bolt-Through Top Hangers on the glass allow immediate fabrication and installation, with no waiting for messy adhesive to dry. Cottage Series Kits come in Brite Anodized, Brite Gold Anodized, Brushed Nickel, and Oil Rubbed Bronze finishes, with other finishes available on special order.
The top hung stock units include: Header, Top Hangers for 1/4 inch (6 millimeter) or 3/8 inch (10 millimeter) glass, Clear Polycarbonate Side Jambs, Bottom Sill, Single-Sided Knob, 24 inch (610 millimeter) Towel Bar, Nylon Rollers, Bottom Guide, Screws, and Bumpers.
Tempered glass and silicone sealant are supplied by the installer to complete the installation. Since all rollers are overhead, the Bottom Sill and Clear Jambs are uncluttered, making cleaning easy.
Available in up to six stock sizes. Extrusions, Bottom Guides, Hardware Packages, and other accessories may be ordered separately as well. Custom Kits are available in multiple configurations and are cut-to-size for easy field installation.

Another great feature is the possibility of an end panel with no corner post.