Skip to main content
L21S Series Mill Aluminum 118-1/8" Base Shoe Drilled for 27/32" Glass

Roll over image to zoom in

CRL L21S10D L21S Series Mill Aluminum 118-1/8" Base Shoe Drilled for 27/32" Glass

Item #: L21S10D by CR Laurence

See reviews See reviews

In Stock $1,104.88 /each

SAVE UP TO 110.49

Buying in bulk

QUICK SHIPPING*Usually ships in 1 business day
+ Add to Wishlist
Buy in Bulk & Save - See How Watch Now

Shop with Confidence

30 Days Easy Return. We are the largest supplier of the most adaptable, personalized hardware in the industry. We work hard to ensure you're satisfied with our products.

  • For 27/32" (21.52 mm) Laminated Tempered Glass (10 x 1.52 x 10 mm)
  • Typically Used as the Base Channel for Laminated Glass Railing Systems
  • Drilled and Counter Bored 11-13/16" Center-to-Center, or We Will Custom Drill to Your Specifications
  • Custom Cutting and Mitering Service
  • Test Reports Available
  • CRL Recommends Consulting with the Glass Fabricator Prior to Wet Setting Laminated Tempered Glass
  • CRL Glass Railing Systems Meets NBC Load Requirements When Installed in Accordance to ICC-3842

Counter Bore X Depth

1-1/4" (31.7 mm) x 1/2" (12.7 mm)

Stock Length

118-1/8" (3 m)

Hole Size

13/16" (20.6 mm)

Holes Drilled C.T.C.

11-13/16" (300 mm)





Glazing Type


Drilling Center to Center


Glazing Thickness






The CRL L21S Series Laminated Square Base Shoe is used as the base channel for glass railing systems. It can be clad in four choices of architectural finishes. The most critical component in a railing system is the proper attachment of the Base Shoe to the substrate. CRL has engineered a variety of attachment methods, and has developed an acceptable combination of drilling patterns and fasteners. A printed brochure with instructions, installation hints, cleaning, and refinishing techniques is available.
For use with 27/32" (21.52 mm) Laminated Tempered Glass (10 x 1.52 x 10 mm)
Thickness Range: .803" to .903" (20.4 to 22.9 mm) Will work with ASTM 7/8" Monolithic Tempered Glass Will Not Accommodate the Full ASTM Thickness Range for 27/32" Glass
Product Warning:
CRL does not recommend direct powder coating of this base shoe extrusion. Powder coated cladding applied over the base shoe is the recommended method.
All pre-drilled CRL Base Shoes have a +1/8 (3mm) / -1/16 (1.5mm) tolerance between each hole drilled in the base. Before drilling installation holes in the concrete or steel substrate it is recommended that the installer place the base shoe into the planned final position, then mark the position of the holes to be drilled into the substrate.