CRL Aluminum Drain Block for L68S, 9BL68, L21S, 9BL21, and L25S Base Shoes Wall Mount Stabilizing Glass Clamps 5 mm) tolerance between each

5 mm) tolerance between each hole drilled in the base

Custom size cladding is required for proper use

For 1-1/2" Diameter Tubing with 1/8" Wall Thickness

To Attach Vertical Posts to Concrete Substrate

CRL Aluminum Drain Block for L68S, 9BL68, L21S, 9BL21, and L25S Base Shoes Wall Mount Stabilizing Glass Clamps 5 mm) tolerance between eachPlaced Under Base Shoe to Provide Drainage Space Great for Balconies and Decks Clear Anodized Finish Sizes to Fit All CRL Base Shoe Series Work with L68S, 9BL68, L21S, 9BL21, and L25S Base Shoes Sold in Packs of Ten Place CRL Aluminum Drain Blocks under exterior installed Base Shoe to provide drainage space for water run off. This is especially important where the Base Shoe will be installed on balconies or decks where water could dam up unless proper