A Concrete-Finish Vanity Sink That Grounds an Industrial or Modern Bath

The Karran Q-306 is a single-bowl oval undermount vanity sink in a Concrete finish, made from quartz composite and built to mount beneath laminate or solid surface countertops in a bathroom vanity of at least 21 inches wide.

Key Features

• Concrete finish quartz composite delivers the raw, muted look of poured concrete without the weight or maintenance.
• Undermount installation keeps the counter edge clean and uninterrupted above the bowl.
• Designed for laminate and solid surface countertops, where the sink bonds seamlessly with the surface.
• Oval single-bowl configuration with a 17 by 13 inch interior and 5-1/2 inch depth.
• cUPC certified for plumbing code compliance in the US and Canada.
• Minimum 21-inch cabinet required for proper fit.

Built for Vanity Countertops That Earn a Second Look

The Concrete finish is a muted, warm gray with the texture and tone of raw concrete, the kind of surface that anchors an industrial, minimalist, or modern farmhouse bathroom without demanding a stone slab budget. Because it is quartz composite, the color runs through the body of the material rather than sitting on a coating, so chips and scratches do not expose a contrasting core underneath.

The oval bowl shape keeps the profile soft while the Concrete tone does the visual work, making this a versatile fit in baths where gray tile, matte black fixtures, or natural wood vanity faces are already in play.

Material and Installation

Quartz composite gives this sink a dense, non-porous body that resists staining and does not absorb water or soap residue into the surface. The Concrete finish coordinates with the material throughout. Installation is undermount only, and this sink is specifically designed for laminate and solid surface countertops, where it can be bonded seamlessly into the surface for a flush, rimless look above the bowl. It does not mount as a drop-in, and it is sized for a new countertop build rather than a swap into an existing cutout. The 1-3/4 inch drain opening accepts standard vanity drain hardware.

Where This Sink Fits

This is a strong choice for a bathroom remodel or new-build vanity where the countertop is laminate or solid surface and the design calls for something beyond a white or gray standard finish. Designers specifying an industrial or spa-minimalist bath will find the Concrete tone sits well alongside matte hardware, dark grout, and wood-grain cabinetry. Cabinet shops building custom vanity units can plan the seamless undermount bond directly into the laminate or solid surface top. Homeowners should confirm the vanity cabinet is at least 21 inches wide and that their countertop fabricator is set up to work with undermount quartz sinks before ordering.

Common Questions

A Vanity Sink That Commits to the Finish

If the design calls for a concrete tone in the basin, the Q-306 delivers it in a durable quartz composite that bonds cleanly into a laminate or solid surface vanity top and holds its look without the upkeep real concrete demands.