Galaxy Cobblestone specialty base cabinets in the island: microwave bays and the parts around them
Reviewed September 2026 · Captivating Cabinets
Galaxy Cobblestone specialty base cabinets are, on this site, GC BMC24 at $614.25 and GC BMC30 at $695.50: base cabinets with an open bay for a microwave or warming drawer and storage underneath. Because this dark gray-brown is most often chosen for the island under lighter wall cabinets, the bay usually ends up in the island too. That changes how it is planned.
Putting the microwave in a dark island

An island microwave keeps the perimeter counter clear and puts reheating within reach of the people sitting at the island. Three decisions come first:
- Which face. The bay goes on the working side facing the range or sink, not the seating side, where it would sit at knee level behind the stools. The open door needs aisle space, and the island clearance guide gives the widths.
- Power. An island has no wall behind it, so the outlet for the bay has to come up through the floor or across the ceiling and down. That work is planned before the floor goes down and the slab is templated, not after the cabinets arrive.
- Opening size. The bay opening is not printed on the listing. Ask your designer for it, then compare it with the appliance’s outside dimensions plus the air gaps its manual requires.
The BMC30 costs $81.25 more than the BMC24 and takes a wider range of appliances, and the island usually has the length to spare. Both are 24″ deep and 34½″ high. The site also lists each as a carcass-only loose part, GCB-BMC24-BO at $396.50 and GCB-BMC30-BO at $448.50; ask your designer what ships with them before choosing that route.
A black microwave nearly disappears in this finish
This is where a dark island helps. A black-glass microwave or warming drawer set into a near-black gray-brown cabinet almost vanishes; from across the room it reads as one more dark panel in the run, which is often what people want from an island appliance. Stainless becomes the brightest thing at knee height and is clearly visible. That is fine if it matches the range and fridge, and odd if it is the only stainless piece on the island. A white appliance would be the one thing everybody notices.
Buy the appliance with the cabinet in mind, then confirm the opening. If the brand you want only comes in stainless, the bay still works; it simply becomes a feature rather than a hidden one.
The island’s exposed sides
An island has no wall to hide against. Every end is seen, and the back often is too. Where a microwave cabinet ends a run, the matching GC SK MC microwave end skin is $50.05; a standard base takes the GC SK BASE skin at $62.40 or a full GC BEP base end panel at $149.50. The product pages also offer a finished-side option at checkout; confirm the charge there.
Order all of it with the cabinets. Grain varies from piece to piece in any stain, which is part of the look, but a panel from a later order can also differ in tone, and on an island you can see both panels from the same spot. The touch-up kit, GCB-TOUCH-UP-KIT at $62.40, covers the corners that stools and bags will knock.
Three more unusual boxes in this finish, and one to confirm
The site lists these under plain base cabinets, not under specialty, and each needs a question answered before it goes on a quote:
- GC BOC30, $598.00: the title says a 30″ base oven cabinet, but the product handle says base open cabinet. Those are two different things. Ask your designer which one it is before planning an under-counter oven around it.
- GC KD30, $172.25, and GC FD18, $559.00: a 5″-high knee drawer, 30″ wide and trimmable to 24″, and an 18″ file drawer base at 28½″ desk height. Together they make a desk. They sit lower than the 34½″ island counter, so use them on a desk wall rather than tucked into the island.
- GC BSS3, $2,021.50: a 34½″-high base with storage accessories factory-installed. The listing does not give its width or say what the accessories are, so confirm both first.
If a corner or a bench brought you here
The other odd base shapes each have a page: blind corner bases, easy reach bases, lazy Susan bases, return angle bases for a peninsula end, and drawer bench seats for a banquette. The whole finish is on the Galaxy Cobblestone collection page. A free design request will place the bay in the island and route its power on the drawing in 3–5 business days.
Common questions
- Can you put a microwave in a kitchen island?
- Yes, in a base microwave cabinet like the GC BMC24 ($614.25) or GC BMC30 ($695.50). Put it on the working side, not the seating side, leave aisle space for its door, and plan the power through the floor before the floor and countertop go in.
- What color microwave goes with dark cabinets?
- Black glass blends into a dark gray-brown cabinet and reads as part of the run. Stainless stands out, which is fine if it matches the other appliances. White is the most noticeable choice on a finish this dark.
- What size microwave fits the BMC30?
- The bay opening is not printed on the product page. Ask your designer for it, then compare it with the microwave’s outside dimensions plus the ventilation gaps its manual requires.
- How do I finish the sides of a kitchen island?
- Use the finished-side option on the product page, or order end skins or panels in the same finish: GC SK MC ($50.05) beside a microwave cabinet, GC SK BASE ($62.40) or GC BEP ($149.50) on a standard base. Order them with the cabinets.
- Is the GC BOC30 an oven cabinet?
- The title says base oven cabinet, while the product handle says base open cabinet. Ask your designer which it is before planning an appliance around it. It is $598.00.
Keep reading
The guides behind the numbers on this page.
- Kitchen Island Clearance Guide
Aisle width in front of an appliance door in an island.
- Black Kitchen Cabinets: Styles, Pairings and Care
Dark islands under light uppers, with appliance pairings.
- Fabuwood Cabinet Sizes and Specs
The dimension tables to check a bay and a desk run against.
- Cabinet End Panels, Scribe Molding and Fillers Explained
Skin or full panel on each exposed side of an island.
- Kitchen Cabinet Terminology Glossary
BMC, BOC, KD and FD, defined.
- Fabuwood Cobblestone vs Nickel
Why this finish usually goes on the island and the mid gray goes around it.






