Sinkits XL Undercounter Sink Mount With 1 1/2 Inch Anchor Bolt

Description

Sinkits XL is an undercounter sink mounting clamp for granite, quartz, concrete, and other hard countertop materials. This XL version uses a 1 1/2 in anchor bolt and is listed for sink rims up to 1 1/8 in, making it a practical choice for many vanity and standard undermount sink jobs.

Sinkits XL Benefits

• 1 1/2 in anchor bolt gives installers a longer mechanical hold point in the countertop.
• Rim capacity up to 1 1/8 in covers many common vanity and undermount sink profiles.
• Clamp design reduces loose screws, nuts, washers, and separate anchors at the job.
• Drill-and-insert workflow removes epoxy cure waiting from normal sink mounting.
• Box supply supports countertop shops that install multiple sinks each week.

This clamp is useful when crews want a repeatable way to secure sinks while keeping the installation kit simple. Check sink rim thickness, underside access, and the countertop material before choosing this size.

Sinkits XL Applications

• Undermount sink installation in quartz and granite bathroom tops.
• Vanity sink jobs where rim height fits the XL clamp range.
• Stone shop prep work before field delivery.
• Repair calls for loose or missing sink support hardware.
• Countertop fabrication teams replacing multi-piece clip sets with a simpler clamp.

Installation Notes

Lay out clamp locations before drilling so the sink rim is supported evenly. Clear dust from each hole and test the clamp before final sink placement. Avoid drilling too close to the sink cutout edge or into weak stone.

Use the sink maker’s support guidance and your shop standard for clamp spacing. Heavy sinks, damaged stone, or unusual rim shapes may need extra review before installation.

Technical Details and Documentation

Sinkits product information lists XL for sink rims up to 1 1/8 in, while Chemical Concepts lists this version with a 1 1/2 in anchor bolt. For broader fastener category context, review the Industrial Fasteners Institute when building a shop hardware standard.

Ordering Help

For companion sink brackets, bits, and anchoring hardware, browse Chemical Concepts undermount sink clips, anchors, and brackets. For help choosing between XL and High Rise, call (800) 220-1966 or email [email protected].