Dimensions / Building materials / Kitchen sinks / Farmhouse sink
A farmhouse (apron-front) sink shows its front: the apron replaces the top of the cabinet face, so the cabinet is cut or built for it. Kohler’s Whitehaven sinks are 29-1/2 to 35-3/4 in wide and fit cabinets only 1/4 to 1/2 in wider (30 and 36 in), while Blanco’s 33 in IKON needs 36 in and IKEA’s 25 in HAVSEN sits on a 24 in frame. Aprons are 8-13/16 or 6-11/16 in tall at Kohler, 9 in on Kraus stainless and 10 in on Kraus fireclay and Blanco IKON; Kohler wants 9 in or 6-7/8 in from the cabinet top to the doors. The sink sits on a frame inside the cabinet that Kohler rates for at least 300 lb (136 kg).
| Blanco IKON 33 | Its minimum cabinet | Apron height |
|---|---|---|
| 33in | 36in | 10in |
Sources: Blanco. Checked October 2026.
Kohler’s tall-apron K-6487 in a 30 in cabinet, 9-1/2 in to the doors and a 300 lb frame are filled in; pick another model or change the cabinet, the doors or the frame.
Cabinet minimums are each maker’s printed figure for that model, counter room is installer guidance, and the accessibility rules are the US ones. Sizes in inches.
Kohler K-6487 prints a minimum base cabinet of 30 in (762 mm) for this 29-3/4 in sink; your cabinet is 30 in.
Kohler Whitehaven sinks run 1/4 to 1/2 in narrower than their cabinet; Blanco IKON 3 in narrower.
Kohler asks for at least 9 in (229 mm) from the top of the cabinet to the top of the door for this sink’s 8-13/16 in apron; you have 9-1/2 in. A tall apron like this one goes in an apron sink base cabinet (Kohler).
Short 6-11/16 in aprons need 6-7/8 in to the doors (Kohler).
Kohler asks for a support frame that carries at least 300 lb (136 kg); Superior Sinks puts a full fireclay sink at about 300 lb, and Ruvati asks for 200 lb. Yours is rated 300 lb.
Ruvati asks for 200 lb; Kohler 300 lb (136 kg).
Selling farmhouse sinks? Photograph the sink from the front and above, mark width, front to back, apron height, bowl depth and wall thickness in SizeMarker, and send the picture with your quote.
Mark a photo| Model | Sink width | Minimum cabinet | Apron |
|---|---|---|---|
| Kohler Whitehaven K-6487Tall apron, enamelled cast iron | 29-3/4 in | 30 in (762 mm) | 8-13/16 in (224 mm) |
| Kohler Whitehaven K-6486Short apron | 29-1/2 in | 30 in (762 mm) | 6-11/16 in (170 mm) |
| Kohler Whitehaven K-6489Tall apron, apron sink base cabinet | 35-3/4 in | 36 in (914 mm) | 8-13/16 in (drawing) |
| Kohler Whitehaven K-6488Short apron, standard base cabinet | 35-1/2 in | 36 in (914 mm) | Short |
| Kohler Dickinson K-6546Integral apron | 33 in | 36 in (914 mm) | — |
| Kraus KHF200-33Stainless, 16 gauge | 32-7/8 × 20-3/4 in | 33 in | 9 in |
| Kraus KFR1-33GWHFireclay, reversible | 33 × 18-1/4 in | 33 in in its table, 36 in in its list | 10 in |
| Blanco IKON 33This page | 33 in | 36 in | 10 in |
| Elkay SWUF28179Fireclay | 30 in | 33 in | — |
| Ruvati RVL2300Fireclay, 1 in thick | 32-3/4 × 20-1/4 in | 36 in | — |
| Franke FHK710-33WHFireclay | 33.071 in | 33 in | — |
| IKEA HAVSENIts own SEKTION base | 25 × 19 in | 24 in frame | — |
Sources: Kohler · Kohler · Kohler · Kohler · Kohler · Kraus · Kraus · Blanco · Elkay · Ruvati · Franke · IKEA
| Item | Figure |
|---|---|
| Cabinet typeKohler | Tall aprons go in an apron sink base cabinet; short aprons fit a standard cabinet once the false drawer front and rail come out |
| Door clearanceKohler | Cabinet top to door top at least 9 in (229 mm) for a tall apron, 6-7/8 in (175 mm) for a short one, and always more than the apron height |
| Cutting the cabinetKohler; Kraus | Kohler marks 7/8 in (22 mm) in from each edge and 7 in (178 mm) down; Kraus adds 1/16 in to the measured apron |
| Support frameKohler; Superior Sinks; Ruvati | At least 300 lb (136 kg) (Kohler); a full fireclay sink is about 300 lb (Superior); Ruvati asks for 200 lb |
| HeightKohler | Rim at or slightly below the cabinet top; the sink goes in before the countertop |
| CountertopKohler | The Tailor apron takes countertops of 1.18 in (30 mm) or less |
| TemplatesKraus; Superior Sinks; Ruvati | None for fireclay, which varies in size: the actual sink is the template |
Sources: Kohler · Kohler · Kohler · Kohler · Kraus · Superior Sinks · Ruvati · Kohler · Kraus
| Item | Figure |
|---|---|
| Its front is the cabinet frontKohler; Kraus | The cabinet face is cut, or an apron sink base cabinet is used; no other sink type needs the cabinet cut |
| Apron height sets the doorsKohler; Kraus; Blanco | Tall 8-13/16 in or short 6-11/16 in (Kohler), 9 in (Kraus stainless), 10 in (Kraus fireclay, Blanco IKON) |
| Sits on a frameKohler; Ruvati | A frame inside the cabinet, built for 200 to 300 lb; undermount sinks hang from the counter instead |
| Cabinet rules differMakers (our comparison) | Kohler Whitehaven 1/4 to 1/2 in narrower than the cabinet, Blanco IKON and Ruvati 3 in or more, IKEA HAVSEN 1 in wider than its frame |
| No faucet holesKohler; Franke | Most have none: the faucet goes on the counter or the wall behind |
| Reversible apronKraus; Ruvati; Elkay | Fireclay models turn round for a flat or a decorative front |
Sources: Kohler · Kraus · Kohler · Kohler · Blanco · Kraus · Ruvati · Ruvati · IKEA · Kohler · Franke · Elkay
It depends on the maker: Kohler’s 29-3/4 and 35-3/4 in Whitehaven sinks fit 30 and 36 in cabinets, but Blanco’s 33 in IKON needs 36 in and IKEA’s 25 in HAVSEN sits on a 24 in frame.
Kohler makes tall 8-13/16 in and short 6-11/16 in aprons; Kraus’s stainless aprons are 9 in and its fireclay ones 10 in, like Blanco’s IKON.
A short-apron one, yes: Kohler’s short aprons fit a standard base cabinet once the false drawer front and rail come out. Tall aprons need an apron sink base cabinet.
Makers rarely print it. Superior Sinks puts a full fireclay sink at about 300 lb, and Kohler asks a frame for at least 300 lb (136 kg).
Kohler asks at least 9 in from the cabinet top to the door top for its tall aprons and 6-7/8 in for short ones; the gap must be more than the apron height.
No maker prints a tolerance, and none ships a template: Kraus, Ruvati and Superior Sinks say the size varies, so the cabinet maker works from the actual sink.
A buyer of apron-front sinks asks for the width and front to back, the apron height, the bowl size and depth, the wall thickness, the minimum cabinet and whether it needs an apron base cabinet, the drain position, whether the apron is reversible, and the crate size and weight. Mark those on a photo of your own sink with SizeMarker, like the picture at the top, and share one card in WhatsApp or WeChat.
