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Karran QU-720-BR sink is a quartz double 50/50 bowl undermount sink that provides two equal-depth bowls for parallel kitchen tasks, which helps installers and users organize prep and cleanup in a standard 33-1/2 inch wide opening. External bowl dimensions of 33-1/2 inches by 20-1/2 inches by 9 inches define the footprint and depth, so the cabinet and stone fabricator can plan cutout size, overhang, and under-sink clearance with confidence. Internal bowl dimensions of 14-3/8 inches by 17-1/4 inches by 9 inches and 14-3/8 inches by 16 inches by 9 inches set the working space in each bowl, guiding layout for faucets, drains, and adjacent workspace. The sink bowl surface has a matte finish, which affects appearance under lighting and can influence how water and marks present during everyday kitchen use.
Undermount installation required means the Karran QU-720-BR sink is designed to be fixed beneath the countertop, so fabricators cut an accurate opening in stone while supporting the 1-1/4 inch by 3/4 inch machined rim for structural stability. The sink may not be top mounted, which keeps the installation approach focused on undermount hardware and adhesive methods suited to stone. This sink may be undermounted to all stone products, so granite, quartz, or similar slabs can be fabricated around the defined rim geometry. A 1/8 inch overhang is recommended, but flush installation is also possible, allowing fabricators to choose between a slight reveal over the bowl or a level transition, depending on design plans and edge treatments.
This quartz brown double 50/50 bowl undermount sink is intended for new countertops, so it is used when fabricators are cutting fresh stone rather than reworking an existing cutout. The requirement that it can only be installed in new countertops, not existing countertops with existing sink cutout, directs it to remodels or new builds that are receiving new stone, which lets installers align bowl placement, faucet holes, and waste openings at the same time. External dimensions of 33-1/2 inches by 20-1/2 inches by 9 inches position it as a common kitchen size, so it fits typical base cabinet widths when planning cabinet runs and appliance clearances. Internal bowl dimensions of 14-3/8 inches by 17-1/4 inches by 9 inches and 14-3/8 inches by 16 inches by 9 inches give users two functional spaces for washing and rinsing, which supports task separation when laying out dish racks, disposers, and filtration taps around the sink area.
Manufacture from 80 percent crushed quartz and 20 percent acrylic resin sets a consistent material density, which matters when routing the stone cutout and bonding the machined resin matrix rim so the sink and countertop behave predictably under normal kitchen loads. The 1-1/4 inch by 3/4 inch machined, resin matrix rim establishes a uniform contact band, helping fabricators apply adhesive and support blocks evenly so the undermount joint remains level along all sides. All external dimensions are approximate to 1/4 inch, which guides shops to treat the listed 33-1/2 inch by 20-1/2 inch by 9 inch measurements as fabrication references when laying out templates and CNC toolpaths. Digital templates for CNC machines are available at www.karran.com, giving CNC-equipped shops reference geometry so sink cutouts and overhangs repeat accurately across multiple jobs using this same brown quartz model. Waste openings of 3-1/2 inches position the drains for standard strainers or disposers, so plumbers can route traps and connections in line with typical rough-in expectations around a double-bowl undermount configuration.
The Karran QU-720-BR sink has external bowl dimensions of 33-1/2 inches by 20-1/2 inches by 9 inches, which guides cabinet sizing, countertop cutout planning, and under-sink clearance during layout.
The Karran QU-720-BR sink has two bowls, each 9 inches deep, which sets working depth for washing tasks and informs plumbing connection height beneath the cabinet.
The Karran QU-720-BR sink is manufactured from 80 percent crushed quartz and 20 percent acrylic resin, giving a composite structure that influences weight, rigidity, and routing behavior during countertop fabrication.
The Karran QU-720-BR sink requires undermount installation and may not be top mounted, so it is fixed beneath the countertop using the machined resin matrix rim as the support interface.
The Karran QU-720-BR sink can only be installed in new countertops, not in existing countertops with an existing sink cutout, so it is selected for new stone fabrication projects.
The Karran QU-720-BR sink has 3-1/2 inch waste openings, aligning with standard kitchen drain fittings so plumbing components can follow typical double-bowl layouts.
The Karran QU-720-BR sink pairs a 33-1/2 inch by 20-1/2 inch by 9 inch undermount format with brown quartz construction, giving fabricators a defined footprint for new stone installations. Its 80 percent crushed quartz and 20 percent acrylic resin composition, machined 1-1/4 inch by 3/4 inch resin matrix rim, and 3-1/2 inch waste openings align with standard shop tooling and plumbing expectations. When a double 50/50 bowl layout, matte surface, and new-countertop-only installation match the kitchen plan, this sink provides the dimensional and material details needed to proceed confidently with layout and fabrication.
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