Appliance Openings

GE JKS3000SNSS cutout dimensions (27-inch single wall oven)

GE's installation instructions for its 27-inch and 30-inch electric built-in wall ovens give the 27-inch single oven a cutout 25 to 25 1/4 in wide, 27 5/8 to 28 1/8 in high and at least 23 1/2 in deep. GE lists the oven itself at 28.75 in high, 26.75 in wide and 26.625 in deep.

Verify with the maker's installation instructions before you cut or buy. This page lists fit dimensions only. It is not installation guidance.

25" to 25 1/4" wide
Cutout height 27 5/8" minimum to 28 1/8" maximum. Cutout depth 23 1/2" minimum.
Source: GE installation instructions 31-2003973 Rev. 2 (PDF), “27" & 30" Electric Built-In Wall Ovens”, dated 09-26 (accessed 2026-10-27), page 5, section 2B “Cutout for single ovens in wall cabinet”, 27" Single Oven column. Last checked 2026-10-27.

Cutout (wall cabinet opening)

DimensionGE figure, 27" single oven
A. Cabinet width27"
B. Cutout width25" min., 25 1/4" max.
C. Cutout height27 5/8" min., 28 1/8" max.
D. Cutout depth23 1/2" min.
E. Bottom of cutout to the floor32 1/2" min.

Source: GE 31-2003973 Rev. 2 (PDF), page 5, rows A to E. The same document's page 4 covers under-counter installs, which are a different case.

Oven size

28.75 H x 26.75 W x 26.625 D
Product dimensions in inches, as GE's product page prints them.
Source: GE JKS3000SNSS product page (accessed 2026-10-27), “Dimensions”. Last checked 2026-10-27.

GE's product page says “This model is no longer being manufactured.” A 27-inch oven needs a narrower opening than a 30-inch one, so do not compare it with the 30-inch table.

The installation instructions do not list model numbers. We use them because GE's own install support page for the JKS3000SNSS links this document.

What this page leaves out

The maker's document also covers electrical, gas, venting, support and clearance requirements. We do not repeat any of that here. Read those sections in the maker's installation instructions.

No affiliate links are live on this site. If we add any, we will mark them and explain them on our disclosure page. Links never change a dimension.

Sources

  1. GE Appliances, installation instructions 31-2003973 Rev. 2 (PDF): https://images.salsify.com/image/upload/s--Gi7VsNGQ--/13d80f85ae7def8354d30a2d7a655e1d80e06dcd.pdf, accessed 2026-10-27
  2. GE Appliances, JKS3000SNSS product page: https://www.geappliances.com/appliance/GE-27-Smart-Built-In-Single-Wall-Oven-JKS3000SNSS, accessed 2026-10-27
  3. GE Appliances, JKS3000SNSS install support page (links the PDF): https://products.geappliances.com/appliance/gea-specs/JKS3000SNSS/install, accessed 2026-10-27

Last checked 2026-10-27.