A Large/Small Bowl Undermount For Kitchens That Work Hard
The Karran EL-78L is a 16 gauge stainless steel undermount kitchen sink in an offset 40/60 double bowl configuration, sized at 32-3/4 by 22 by 10 inches. The larger bowl sits on the left, giving a dedicated primary wash station while the smaller bowl handles prep, disposal connections, or a colander. Ordered as a kit, it arrives with bottom grids, basket strainers, and Luster Pro oil already in the box.
Key Features
• 16 gauge stainless steel construction delivers noticeably greater thickness and rigidity than standard 18 gauge bowls.
• Offset 40/60 bowl split dedicates the larger left bowl to primary washing and the smaller right bowl to prep or disposal duties.
• Undermount installation positions the sink beneath the countertop for a clean counter edge that wipes down without catching on a rim.
• Bottom grids and basket strainers included protect the bowl floors and contain drain debris right out of the box.
• 10-inch bowl depth accommodates large pots and sheet pans without water splashing over the edge.
• Luster Pro oil included keeps the stainless finish looking its best from day one.
Where an Offset Bowl Layout Pays Off
A 50/50 double bowl divides the sink evenly, which works well until you need to fit a stockpot, a roasting pan, or a full sheet tray under running water. The 40/60 split solves that by giving the left bowl the majority of the interior width while still preserving a functional right bowl for rinsing produce, staging cut food, or dropping in a disposal flange. Cabinet shops installing kitchen packages, contractors building out full kitchen remodels, and homeowners who cook seriously all benefit from this configuration: the bigger bowl handles the heavy work and the smaller bowl stays clear for everything else. At 10 inches deep, both bowls accept tall cookware that a shallower sink would leave sticking out above the rim.
16 Gauge Construction and the Kit Contents
Gauge is the single most meaningful quality signal in stainless sinks. At 16 gauge, the steel in the EL-78L is measurably thicker than what you find in most builder-grade sinks, which translates to less drum-resonance when water runs, less flex when the bowl is loaded, and a surface that holds up to daily use without showing wear as quickly. The brushed satin interior finish resists showing minor scuffs while keeping the look consistent over time. As a -PK1 kit, the sink ships with stainless steel basket strainers for both drain openings, bottom grids sized to each bowl, and Luster Pro oil. That means the sink goes in complete, without a separate trip for drain hardware.
Right for Stone, Quartz, and Solid Surface Countertops
The EL-78L is a conventional undermount sink, mounted beneath the countertop with the counter edge finished and visible from above. It pairs naturally with stone, quartz composite, and solid surface countertops where an exposed counter edge and a clean drain line are expected. Faucet holes are drilled through the countertop rather than a sink deck, so hole placement and count are determined at the fabrication stage. This is a professional-path installation recommended for experienced installers or fabricators working with solid countertop materials. Cabinetmakers building kitchens to order, fabricators pairing sinks to stone slabs, and contractors doing full kitchen fits will find this sink sized and equipped to go in without surprises.
Which bowl is the larger one on the EL-78L?
The large bowl is on the left (the "L" in EL-78L indicates the large-bowl-left orientation). If your layout calls for the large bowl on the right, a companion model handles that configuration instead.
What comes in the kit, and do I need to buy a drain separately?
The -PK1 kit includes stainless steel basket strainers for both drain openings, bottom grids for each bowl, and Luster Pro oil. Drain hardware for both bowls ships in the box, so no separate drain purchase is needed to complete the installation.
Does the sink include a template or mounting clips?
Karran Elite Series undermount sinks do not include a paper template or mounting clips. The actual sink should be on hand before the countertop cutout is made, and mounting hardware is determined by the countertop material and installer method.
What countertop materials work with this sink?
The EL-78L is a conventional undermount and works with stone, quartz composite, and solid surface countertops. It is not an Edge Series seamless sink, so it is not documented for seamless laminate installation.
Where does the faucet mount on this sink?
There is no faucet deck on this undermount model. The faucet, soap dispenser, and any other deck accessories mount through holes drilled in the countertop behind the sink during fabrication.
Heavy-Gauge Stainless, Ready to Install
The EL-78L brings 16 gauge construction, a practical offset bowl layout, and a complete drain and grid kit to a kitchen sink footprint sized for serious daily use. It is built for installations where longevity and performance matter more than price-per-inch.
