{"product_id":"kraus-31-inch-undermount-single-bowl-black-onyx-granite-kitchen-sink","title":"KRAUS 31\" Undermount Single Bowl Black Onyx Granite Kitchen Sink - KGU-413B","description":"\u003ch2\u003eKRAUS 31\" Undermount Single Bowl Black Onyx Granite Kitchen Sink - KGU-413B\u003c\/h2\u003e\n\u003cp\u003eBeautiful and versatile, Quarza granite kitchen sinks are made from quartz composite material that brings the high-end look of natural granite with rounded corners and smooth easy-clean surface. White kitchen sink offers a clean, bright aesthetic that works with any kitchen from classic to modern and pairs with trending black faucet finish. Undermount sink installation simplifies cleanup by letting you wipe water right into the sink. Durable sink for kitchen stands up to impact, scratches and shock. White sink is colored all the way through to resist fading. Deep sink with sloped bottom for easy draining has ample room for large items. Installation-ready white granite sink comes with drain and hardware. Quarza sink is also available as drop in sink to install with any countertop material.\u003c\/p\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv class=\"ex1\"\u003e\n\u003cul\u003e\n\u003cli\u003eGRANITE KITCHEN SINK: Durable kitchen sink is made from advanced quartz composite material that delivers the elegant look of natural granite with great resistance to impact, scratches, and thermal shock\u003c\/li\u003e\n\u003cli\u003eEXTERNAL DIMS: 30 1\/2” L x 17” W x 9 1\/4” D – BOWL DIMS: 28 3\/8” L x 14 1\/2” W x 8 7\/8” D – MIN CABINET SIZE: 33”\u003c\/li\u003e\n\u003cli\u003eKIT INCLUDES: White granite sink, stainless steel drain assembly with removable strainer, heat-resistant silicone mitt and trivet, mounting hardware, cut-out template \u003c\/li\u003e\n\u003cli\u003eADVANCED QUARTZ COMPOSITE SINK: White kitchen sink is made from natural quartz and premium acrylic resin, with a hard, smooth, non-porous surface for durability and easy cleaning\u003c\/li\u003e\n\u003cli\u003eWHITE SINK offers timeless versatility, balancing classic charm with modern style to create a clean, bright look that makes any space feel lighter and more open – Pairs with trending gold faucet or black faucet finish and works with any style of kitchen \u003c\/li\u003e\n\u003cli\u003eUNDERMOUNT SINK INSTALLATION creates a seamless transition from sink to countertop with no exposed mounting deck to trap debris – Simplifies cleanup by letting you wipe water and crumbs right into the sink\u003c\/li\u003e\n\u003cli\u003eEASY TO CLEAN: Sink for kitchen with smooth non-porous surface resists stains and stands up to household cleaners – Gently rounded corners minimize build-up for easy maintenance \u003c\/li\u003e\n\u003cli\u003eSPACIOUS SINGLE BOWL SINK offers generous workspace for oversized cookware, with a deep kitchen sink bowl that helps contain mess and splatter – Rear-offset drain creates an uninterrupted work surface and maximizes usable storage space under the sink\u003c\/li\u003e\n\u003cli\u003eENGINEERED FOR EASY DRAINING: Gently sloped bottom and smooth surface help keep water from pooling in the sink – OPTIMIZED SLOPE helps stop fragile glassware from tipping over\u003c\/li\u003e\n\u003cli\u003eCOLOR-STABLE MATERIAL: Vivid color penetrates all the way through the material for a lasting beautiful look that resists fading – HEAT SAFE up to 500°F to stand up to hot cookware\u003c\/li\u003e\n\u003cli\u003eNATURALLY SOUND-ABSORBING material helps reduce noise and vibration from dishes and garbage disposal for a quieter kitchen sink\u003c\/li\u003e\n\u003cli\u003eSTAINLESS STEEL DRAIN ASSEMBLY with removable strainer catches food waste to help prevent clogging the drainpipe, strainer lifts out for easy cleaning – Included silicone mitt and trivet protect your hands and counters from hot items\u003c\/li\u003e\n\u003cli\u003eINSTALLATION-READY SINK comes with all mounting hardware and cut-out template for undermount kitchen sink installation\u003c\/li\u003e\n\u003cli\u003eUNIVERSAL DESIGN with soft lines and rounded corners offers an elegant look that complements the style of any kitchen – Kraus granite sinks are also available in drop in sink models that install with any countertop material\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003e\u003cb\u003eWhat our Experts Think\u003c\/b\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"15pxiaf\" data-start=\"27\" data-end=\"349\"\u003e\n\u003cstrong data-start=\"29\" data-end=\"69\"\u003ePremium Granite Composite Durability\u003c\/strong\u003e\u003cbr data-start=\"69\" data-end=\"72\"\u003eThe KRAUS Forteza 31\" Undermount Single Bowl Black Onyx Granite Kitchen Sink (KGU-413B) is crafted from \u003cstrong data-start=\"178\" data-end=\"233\" data-is-only-node=\"\"\u003equartz composite engineered for stone-like strength\u003c\/strong\u003e, delivering excellent resistance to scratches, chips, heat, and daily wear. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1jsstz1\" data-start=\"351\" data-end=\"622\"\u003e\n\u003cstrong data-start=\"353\" data-end=\"389\"\u003eSleek Undermount Seamless Design\u003c\/strong\u003e\u003cbr data-start=\"389\" data-end=\"392\"\u003eDesigned for undermount installation, it creates a \u003cstrong data-start=\"445\" data-end=\"482\" data-is-only-node=\"\"\u003eflush transition with countertops\u003c\/strong\u003e, allowing easy wipe-down of crumbs and water directly into the sink for a cleaner kitchen workflow. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"e9kdry\" data-start=\"624\" data-end=\"874\"\u003e\n\u003cstrong data-start=\"626\" data-end=\"669\"\u003eCompact Yet Highly Functional 31\" Basin\u003c\/strong\u003e\u003cbr data-start=\"669\" data-end=\"672\"\u003eThe single-bowl layout offers a \u003cstrong data-start=\"706\" data-end=\"746\" data-is-only-node=\"\"\u003espacious, uninterrupted washing area\u003c\/strong\u003e, ideal for large cookware while still fitting standard 33\" base cabinet configurations. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"xb1eol\" data-start=\"876\" data-end=\"1116\"\u003e\n\u003cstrong data-start=\"878\" data-end=\"909\"\u003eNaturally Quiet Performance\u003c\/strong\u003e\u003cbr data-start=\"909\" data-end=\"912\"\u003eDense granite composite construction provides \u003cstrong data-start=\"960\" data-end=\"990\" data-is-only-node=\"\"\u003eexcellent sound absorption\u003c\/strong\u003e, reducing noise from dishwashing and running water for a quieter kitchen environment. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"9z4dco\" data-start=\"1118\" data-end=\"1371\"\u003e\n\u003cstrong data-start=\"1120\" data-end=\"1162\"\u003eHeat, Stain \u0026amp; Impact Resistant Surface\u003c\/strong\u003e\u003cbr data-start=\"1162\" data-end=\"1165\"\u003eEngineered with a thermal finishing process, the sink surface is \u003cstrong data-start=\"1232\" data-end=\"1296\" data-is-only-node=\"\"\u003ehighly resistant to heat damage, staining, and discoloration\u003c\/strong\u003e, ensuring long-term visual appeal. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"lsot5k\" data-start=\"1373\" data-end=\"1591\"\u003e\n\u003cstrong data-start=\"1375\" data-end=\"1405\"\u003eEasy-Clean Rounded Corners\u003c\/strong\u003e\u003cbr data-start=\"1405\" data-end=\"1408\"\u003eGently curved interior edges are designed to \u003cstrong data-start=\"1455\" data-end=\"1506\" data-is-only-node=\"\"\u003eprevent debris buildup and simplify maintenance\u003c\/strong\u003e, supporting better hygiene with less effort. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"nsy3wr\" data-start=\"1593\" data-end=\"1774\"\u003e\n\u003cstrong data-start=\"1595\" data-end=\"1626\"\u003eModern Black Onyx Aesthetic\u003c\/strong\u003e\u003cbr data-start=\"1626\" data-end=\"1629\"\u003eThe deep matte black finish delivers a \u003cstrong data-start=\"1670\" data-end=\"1703\" data-is-only-node=\"\"\u003ebold, contemporary stone look\u003c\/strong\u003e that pairs well with modern fixtures and minimalist kitchen designs.\u003c\/li\u003e\n\u003cli data-section-id=\"hdfcmi\" data-start=\"1776\" data-end=\"1997\"\u003e\n\u003cstrong data-start=\"1778\" data-end=\"1796\"\u003eExpert Verdict\u003c\/strong\u003e\u003cbr data-start=\"1796\" data-end=\"1799\"\u003eA strong choice for homeowners wanting a \u003cstrong data-start=\"1842\" data-end=\"1933\" data-is-only-node=\"\"\u003edurable, low-maintenance granite sink with premium aesthetics and everyday practicality\u003c\/strong\u003e, especially for modern remodels focused on style + performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cb\u003e\u003cbr\u003eQ\u0026amp;A\u003c\/b\u003e\u003c\/h5\u003e\n\u003cp data-start=\"154\" data-end=\"351\"\u003e\u003cstrong data-start=\"154\" data-end=\"197\"\u003eQ1: What material is this sink made of?\u003c\/strong\u003e\u003cbr data-start=\"197\" data-end=\"200\"\u003eA: It is made from \u003cstrong data-start=\"219\" data-end=\"285\"\u003egranite composite (about 80% natural quartz and acrylic resin)\u003c\/strong\u003e, offering a natural stone look with high durability and strength.\u003c\/p\u003e\n\u003cp data-start=\"353\" data-end=\"522\"\u003e\u003cstrong data-start=\"353\" data-end=\"396\"\u003eQ2: What installation type does it use?\u003c\/strong\u003e\u003cbr data-start=\"396\" data-end=\"399\"\u003eA: It features an \u003cstrong data-start=\"417\" data-end=\"438\"\u003eundermount design\u003c\/strong\u003e, creating a seamless transition from countertop to sink for a clean, modern finish.\u003c\/p\u003e\n\u003cp data-start=\"524\" data-end=\"708\"\u003e\u003cstrong data-start=\"524\" data-end=\"561\"\u003eQ3: What are the sink dimensions?\u003c\/strong\u003e\u003cbr data-start=\"561\" data-end=\"564\"\u003eA: The sink measures approximately \u003cstrong data-start=\"599\" data-end=\"625\"\u003e31-1\/2\" x 17\" x 8-7\/8\"\u003c\/strong\u003e and requires a \u003cstrong data-start=\"641\" data-end=\"669\"\u003eminimum 33\" cabinet base\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"710\" data-end=\"914\"\u003e\u003cstrong data-start=\"710\" data-end=\"765\"\u003eQ4: Is it resistant to heat, stains, and scratches?\u003c\/strong\u003e\u003cbr data-start=\"765\" data-end=\"768\"\u003eA: Yes, the granite composite surface is \u003cstrong data-start=\"809\" data-end=\"878\"\u003ehighly resistant to heat, chipping, scratching, and discoloration\u003c\/strong\u003e due to a thermal finishing process.\u003c\/p\u003e\n\u003cp data-start=\"916\" data-end=\"1069\"\u003e\u003cstrong data-start=\"916\" data-end=\"953\"\u003eQ5: Is the sink noisy during use?\u003c\/strong\u003e\u003cbr data-start=\"953\" data-end=\"956\"\u003eA: No, the \u003cstrong data-start=\"967\" data-end=\"1022\"\u003enon-porous granite material naturally absorbs sound\u003c\/strong\u003e, making it quieter than stainless steel sinks.\u003c\/p\u003e\n\u003cp data-start=\"1071\" data-end=\"1214\"\u003e\u003cstrong data-start=\"1071\" data-end=\"1104\"\u003eQ6: Does it have a deep bowl?\u003c\/strong\u003e\u003cbr data-start=\"1104\" data-end=\"1107\"\u003eA: Yes, it features an \u003cstrong data-start=\"1130\" data-end=\"1163\"\u003eextra-deep single bowl design\u003c\/strong\u003e, ideal for washing large pots, pans, and cookware.\u003c\/p\u003e\n\u003cp data-start=\"1216\" data-end=\"1356\"\u003e\u003cstrong data-start=\"1216\" data-end=\"1244\"\u003eQ7: Is it easy to clean?\u003c\/strong\u003e\u003cbr data-start=\"1244\" data-end=\"1247\"\u003eA: Yes, the \u003cstrong data-start=\"1259\" data-end=\"1309\"\u003esmooth, non-porous surface and rounded corners\u003c\/strong\u003e make cleaning simple and help prevent buildup.\u003c\/p\u003e\n\u003cp data-start=\"1358\" data-end=\"1521\"\u003e\u003cstrong data-start=\"1358\" data-end=\"1409\"\u003eQ8: Does it come with installation accessories?\u003c\/strong\u003e\u003cbr data-start=\"1409\" data-end=\"1412\"\u003eA: Yes, it typically includes \u003cstrong data-start=\"1442\" data-end=\"1503\"\u003emounting hardware, template, and installation accessories\u003c\/strong\u003e for easier setup.\u003c\/p\u003e\n\u003ch5\u003e\u003cb\u003e\u003cbr\u003eMaintenance Tips\u003c\/b\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"1fbpkoq\" data-start=\"92\" data-end=\"259\"\u003e\n\u003cstrong data-start=\"94\" data-end=\"143\"\u003eClean daily with mild dish soap + soft sponge\u003c\/strong\u003e – Keeps the non-porous granite surface smooth and prevents residue buildup. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"10mbbrw\" data-start=\"260\" data-end=\"427\"\u003e\n\u003cstrong data-start=\"262\" data-end=\"294\"\u003eRinse and dry after each use\u003c\/strong\u003e – Prevents water spots, clouding, and mineral deposits, especially on the black onyx finish. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"kalv1r\" data-start=\"428\" data-end=\"581\"\u003e\n\u003cstrong data-start=\"430\" data-end=\"455\"\u003eAvoid harsh chemicals\u003c\/strong\u003e – No bleach, ammonia, or acidic cleaners; they can damage the protective resin layer. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"11kvocp\" data-start=\"582\" data-end=\"710\"\u003e\n\u003cstrong data-start=\"584\" data-end=\"618\"\u003eNo abrasive pads or steel wool\u003c\/strong\u003e – These can scratch and dull the surface over time. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"zolnru\" data-start=\"711\" data-end=\"832\"\u003e\n\u003cstrong data-start=\"713\" data-end=\"747\"\u003eUse a sink grid for protection\u003c\/strong\u003e – Helps prevent scratches from heavy cookware and maintains the deep basin finish.\u003c\/li\u003e\n\u003cli data-section-id=\"1f737h6\" data-start=\"833\" data-end=\"955\"\u003e\n\u003cstrong data-start=\"835\" data-end=\"857\"\u003eClean stains early\u003c\/strong\u003e – Coffee, tea, and food residues should be wiped promptly to avoid dark staining or dull spots.\u003c\/li\u003e\n\u003cli data-section-id=\"diguc7\" data-start=\"956\" data-end=\"1076\"\u003e\n\u003cstrong data-start=\"958\" data-end=\"983\"\u003eOccasional deep clean\u003c\/strong\u003e – Use baking soda paste or manufacturer-approved non-abrasive cleaners for stubborn marks.\u003c\/li\u003e\n\u003cli data-section-id=\"ttfnns\" data-start=\"1077\" data-end=\"1176\"\u003e\n\u003cstrong data-start=\"1079\" data-end=\"1105\"\u003ePrevent standing water\u003c\/strong\u003e – Keeps the sink looking uniformly dark and avoids mineral outlines.\u003c\/li\u003e\n\u003cli data-section-id=\"w97p8h\" data-start=\"1177\" data-end=\"1299\"\u003e\n\u003cstrong data-start=\"1179\" data-end=\"1212\"\u003eMaintain drain area regularly\u003c\/strong\u003e – Flush with warm water to prevent debris buildup and odor in the rear drain system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KRAUS","offers":[{"title":"Default Title","offer_id":45552669163711,"sku":"KGU-413B","price":247.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/kgu-413b-main-image_4czxtzrc3hxk1c6z.jpg?v=1777128056","url":"https:\/\/www.mybackyardzone.com\/products\/kraus-31-inch-undermount-single-bowl-black-onyx-granite-kitchen-sink","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}