CRL Black U-Channel Top-Load Glazing Gasket 3/8-1/2 in Glass, 120 in

• Channels for 3/8" or 1/2" (10 or 12 mm) and 5/8" or 3/4" (16 and 19 mm) glass
• Use monolithic tempered glass
• Matches the width of door and sidelite rails
• Accepts roll-in glazing gasket, top pivot block, and snap-in filler strip
• Ready-to-ship models from CRL inventory (SKU: NH2BLSL)
• Available in stock lengths, fabricated headers, or headers with side pockets for "lift and drop" panel installation

This aluminum extrusion was developed with three primary uses in mind:

1. As a U-channel that matches the width of CRL sidelite rails and door rails—ideal for an even sight line on storefront or interior glass assemblies.
2. As a narrow header that accepts a top free-swinging pivot to secure the top of glass doors—suitable for tempered glass door installations.
3. As an even sight line system: secure the fabricated narrow header to the opening, then attach the sidelite rail to the narrow header with the 1/4" (6 mm) header saddle.

All drilling, tapping, and fabrication can be completed at manufacture upon request to save installation time. This extrusion is a practical solution for installers needing an aluminum u-channel for tempered glass doors, a narrow header for top pivot mounting, or a coordinated even sight line system for doors and sidelites.

Quick Pick policy: products are stocked at CRL's centralized service center and ship on the next weekly re-supply truck to your regional CRL service center. If regional stock is unavailable, orders are typically filled within a few days. Check stock availability by clicking the "CHECK STOCK AVAILABILITY" box above.

Order the NH2BLSL aluminum extrusion for tempered glass doors and sidelites—check stock and buy now.