How To Build Frameless Wall Cabinets

Disclosure: This post may contain affiliate links. As an Amazon Associate I earn from qualifying purchases. DIY work involves risk. Verify dimensions, follow local codes, and use proper safety equipment. ⏱ Time 3–4 Hours Difficulty Beginner 💰 Cost ~$60 / cabinet Key Tool Kreg Pocket Hole Jig Quick Summary — Frameless Wall Cabinets

• European frameless uppers are simpler to build than face frame cabinets and give you more usable interior space
• All component dimensions follow simple formulas — sides, top/bottom, back, shelves, and doors are all covered
• Standard depth is 12" over a counter (11" interior) — enough for most dinner plates
• Pocket hole joinery means no clamps needed — the screws hold everything while the glue dries
• Build base cabinets first? See my frameless base cabinet guide and drawer box guide

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Get the PDF Guide 📄 Jump to: Math At-A-GlanceQuick SpecsWhat You’ll NeedDimensionsAssemblyHingesFAQ

European frameless wall cabinets have a very clean, contemporary look — but frameless cabinets are versatile. By using nicer doors and adding crown molding and light rail trim you can achieve a more traditional look. You can save a lot of money building your own. While it isn’t very difficult, accurate cuts and square assembly are critical. Before committing to a full kitchen, build one small cabinet first to make sure you’re happy with your results.

Math At-A-Glance: Key Deductions for Frameless Wall Cabinets

Every component dimension follows a simple formula. This table gives you the full picture before you start cutting. All examples assume 3/4" plywood and a 12-1/2" deep × 18" wide × 30" tall cabinet.

Component	Subtract this	Why	Example (3/4" ply)
Side width	3/4" (door thickness)	Overlay door sits in front	12-1/2" − 3/4" = 11-3/4"
Top/bottom length	1-1/2" (both sides)	Fits between side panels	18" − 1-1/2" = 16-1/2"
Top/bottom width	3/4" (door thickness)	Same depth as sides	12-1/2" − 3/4" = 11-3/4"
Back height	1-1/2" (top + bottom)	Fits between top and bottom	30" − 1-1/2" = 28-1/2"
Back width	1-1/2" (both sides)	Fits between side panels	18" − 1-1/2" = 16-1/2"
Shelf width	1-3/4" (door + back + 1/4" gap)	Clears door and back, allows expansion	12-1/2" − 1-3/4" = 10-3/4"
Single door height	1/8" total	1/16" clearance per side	30" − 1/8" = 29-7/8"
Single door width	1/8" total	1/16" clearance per side	18" − 1/8" = 17-7/8"
Each double door width	1/4" total, divide by 2	1/8" between doors, 1/16" per side	(36" − 1/4") / 2 = 17-7/8"

Quick Reference: Standard Wall Cabinet Dimensions

Spec	Standard	Notes
Depth (over counter)	12"	11" interior, fits most dinner plates
Height	30" or 42"	30" standard, 42" goes to ceiling
Max Width	42"	Narrower is more stable and rigid
Door gap	1/16" min per side	1/8" per side recommended
Hinge bore center	3-3/16" from door edge	Top and bottom hinges

What You’ll Need

What You’ll Need

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Materials

3/4" hardwood veneered plywood — for all carcass parts Iron-on edge banding — veneer to match your plywood Pocket hole screws — 1-1/4" coarse thread for 3/4" stock Wood glue (Titebond II or III) 5mm shelf pins (bag of 20) Concealed 35mm cup hinges — 1/2" overlay (2 per door)

Tools

Table saw or circular saw + guide Read Kreg Pocket Hole Jig Read Kreg Shelf Pin Drilling Jig Buy Concealed Hinge Jig (35mm) Buy Drill, combination square, tape measure

Supplies

• Sandpaper (120 / 180 grit)
• Bar clamps or corner clamps
• Digital caliper — verify actual plywood thickness
• Primer + paint, or stain + topcoat

Choosing Your Material

Unlike my other posts there is no single cut list here, because these are general instructions and your cabinet dimensions will vary. Instead I’ll give you the formulas to calculate every component to your own specifications.

For the carcass, 3/4" plywood throughout is the recommendation. It’s the simplest approach and produces the strongest result. Some builders use 1/4" backs with nailer strips, or 1/2" sides, mainly to save material cost. If you’re building just a few cabinets the simplification of using one thickness throughout is worth more than the material savings.

Plywood is better than MDF, which is better than particle board. For kitchen or bathroom cabinets use A1 or A2 grade hardwood veneered plywood for exposed ends and doors. Lower appearance grades work fine for the interior carcass if you’re painting. For shop or garage cabinets, shop-grade or even CDX plywood will do.

For doors, the simplest option is slab doors cut from the same plywood as the carcass. That’s what this guide covers. If you want raised panel or shaker doors, a number of companies make custom doors to size at reasonable cost — worth considering if the style matters more than the budget.

Step 1: Calculate Cabinet Component Dimensions

In our tutorial we’ll build a cabinet that is 18" W × 30" H × 12-1/2" D, made from 3/4" plywood throughout. This gives us an 11" interior depth — enough for most dinner plates. Standard upper cabinet depth is 12" including the door. If you have larger plates or want extra room, build deeper. For consistency, “height” always refers to the direction of the grain.

Measure Your Actual Plywood ThicknessPlywood is almost never the thickness marked on the sheet. “3/4"” often measures 23/32" or even 11/16". Use a digital caliper to get your actual thickness, then use that number in every formula. A 1/32" error compounds across every joint.

Cabinet Side Dimensions

You need 2 side pieces. The height of each side equals the cabinet height. Because we’re using overlay doors the width of the side is the cabinet depth minus the thickness of the door.

Cabinet Side Panel Side Height = Cabinet Height Side Width = Cabinet Depth − Door Thickness Example: 30" | 12-1/2" − 3/4" = 11-3/4" Cut 2 pieces at 11-3/4" × 30". For inset doors the side width equals the full cabinet depth — no subtraction needed.

Cabinet Top and Bottom Dimensions

The top and bottom pieces are identical in size. The length fits between the two sides; the width matches the depth of the sides.

Cabinet Top & Bottom Panel Top/Bottom Length = Cabinet Width − (2 × Side Thickness) Top/Bottom Width = Cabinet Depth − Door Thickness Example: 18" − 1-1/2" = 16-1/2" | 12-1/2" − 3/4" = 11-3/4" Cut 2 pieces at 16-1/2" × 11-3/4".

Cabinet Back Dimensions

The back fits inside both side panels and between the top and bottom. Subtract both side thicknesses from the width and both the top and bottom thicknesses from the height.

Cabinet Back Panel Back Height = Cabinet Height − Top Thickness − Bottom Thickness Back Width = Cabinet Width − (2 × Side Thickness) Example: 30" − 3/4" − 3/4" = 28-1/2" | 18" − 1-1/2" = 16-1/2" Cut 1 piece at 28-1/2" × 16-1/2".

Adjustable Shelf Dimensions

Shelves rest on 5mm shelf pins inserted into holes drilled inside the cabinet sides. The shelf spans the interior width and stops short of the door and back to allow for clearance and wood movement.

Adjustable Shelf Shelf Length = Cabinet Width − (2 × Side Thickness) Shelf Width = Cabinet Depth − Door Thickness − Back Thickness − 1/4" Example: 18" − 1-1/2" = 16-1/2" | 12-1/2" − 3/4" − 3/4" − 1/4" = 10-3/4"

Cabinet Door Dimensions

Our cabinet uses a single full-overlay door — it sits in front of the cabinet and covers almost all of it. It needs a small gap around the perimeter so it doesn’t bind against adjacent doors or walls. The minimum clearance with most hinges is 1/16" per side, so we subtract 1/8" from each dimension.

Single Full-Overlay Door Door Height = Cabinet Height − 1/8" Door Width = Cabinet Width − 1/8" Example: 30" − 1/8" = 29-7/8" | 18" − 1/8" = 17-7/8" Double Full-Overlay Doors Door Height = Cabinet Height − 1/8" Each Door Width = (Cabinet Width − 1/4") ÷ 2 1/8" gap between the two doors, 1/16" clearance at each side. Example on a 36" cabinet: (36" − 1/4") / 2 = 17-7/8" each.

Step 2: Assemble Sides, Top and Bottom

Apply edge banding to the front edge of each of the four perimeter pieces before assembly — it’s much easier to do before the box is together. Then drill pocket holes in the top and bottom pieces as shown.

Dry Fit First — AlwaysAssemble the box without glue first. Measure diagonally corner to corner in both directions — equal diagonals mean the box is square. If it’s not, loosen the screws, rack the assembly until it is, then disassemble, apply glue, and reassemble. Far easier to fix before the glue sets.

Start by attaching the top to one side. Pocket holes face the outside of the cabinet.

Attach the bottom to the same side, again with pocket holes facing outward.

Close the box by screwing the second side into place. Check all four corners for square before the glue sets.

Step 3: Attach the Cabinet Back

Before attaching the back, dry-fit it to confirm it’s square and fits inside the opening. If it’s off, trim it now — the back will lock whatever shape the box is in when it goes on. Once confirmed, disassemble, apply glue to all joints, reassemble, then drill pocket holes around the perimeter of the back and attach it.

One of the real advantages of pocket hole joinery is that the screws act like clamps — they hold everything tight while the glue dries without needing a wall of bar clamps.

Step 4: Drill Shelf Pin Holes

Remove the fences from your Kreg Shelf Pin Jig and place it at the bottom of the cabinet with the short side flush with the front face. This positions holes 37mm from the front edge. Use the 2nd and 3rd holes from the bottom to drill pilot holes for the lower hinge mounting plate.

Slide the jig to the top of the cabinet, keeping it flush with the front. Use positions 2 and 3 from the top for the upper hinge plate pilot holes.

Now insert the indexing pin in the bottom hole of the jig, drop it into the first shelf pin hole drilled previously, and continue up the cabinet drilling the remaining front shelf pin holes. Stop before you reach the top hinge pilot holes.

Flip the jig so the short end faces the back of the cabinet. Start from the bottom corner and use the indexing pin to drill the back row of shelf pin holes up the side. No hinge pilot holes needed in the back row. Repeat the entire process on the other side panel.

Step 5: Mark and Drill Hinge Bore Locations

On the back (hinge) face of the door, mark two lines 3-3/16" in from the top and bottom edges. This is the centerline for the 35mm hinge bore cup.

Use a concealed hinge jig to drill the 35mm bores at each centerline. Attach the hinges, hang the door, and adjust the three-way adjustment screws until the reveal is even all the way around the cabinet.

Insert shelf pins, drop in the shelf, and the cabinet is complete. Paint and prime, or stain and finish.

Complete the Build

Haven’t built the base cabinets yet? Start with my guide on How to Build Frameless Base Cabinets — it covers standard depths and base platform options that determine your wall cabinet positioning. Then see How to Build Drawer Boxes to fill those base cabinets out.

Frequently Asked Questions

How deep should wall cabinets be?

12" is the standard depth for upper cabinets over a counter — that gives you about 10-1/2" to 11" of interior space which fits most dinner plates. If you have larger plates or want extra room, build a bit deeper. Over a refrigerator or tall appliance you can go deeper since you have more support. I built mine at 12-1/2" for a full 11" interior and it’s been the right call.

How high should wall cabinets be hung?

The standard is 18" above the countertop. That gives enough clearance to work comfortably and enough room for small appliances to tuck underneath. If you’re going with 42" cabinets to reach the ceiling, work out your ceiling height and countertop height first so you know exactly where the cabinet tops need to land.

How wide can I make a frameless wall cabinet?

With 3/4" plywood, keep it to 42" maximum. The wider you go the more a shelf will sag under load over time. For cabinets over 36" wide, add a center support or use thicker shelf material. Narrower is more rigid — two 21" cabinets will outperform one 42" cabinet if the space allows it.

Overlay vs inset doors: which is easier to build for?

Overlay, full stop. With inset doors the opening has to be dead square and the door has to fit precisely or you’ll have visible gaps. With overlay the door covers the front of the cabinet so small imperfections in the carcass don’t show. For a first build, always go overlay.

Do I need clamps to build with pocket holes?

One of the real advantages of pocket hole joinery is that the screws hold everything tight while the glue dries — you don’t need a wall of bar clamps. A couple of corner clamps are useful when attaching the top or bottom to a side while working alone, but they’re not strictly required.

What concealed hinges should I use?

Any standard 35mm cup hinge for a 1/2" overlay application will work with this design. Blum makes excellent hinges with three-way adjustment that makes dialing in the door alignment straightforward. Cheap hinges work initially but the adjustment screws tend to strip over time. Spend a few extra dollars on quality hardware — you’ll be opening these hundreds of times a year.

Can I use a thinner back panel?

Yes. A 1/4" plywood back with 1/2" nailer strips top and bottom is a common way to save material and weight, especially on taller cabinets. It gives the enclosed look without using a full piece of 3/4". The trade-off is slightly less rigidity. For kitchen cabinets I use 3/4" throughout. For workshop or garage builds the thinner back is fine.

Do I need to finish the inside of the cabinet?

You don’t have to, but a coat or two of water-based polycrylic on the interior makes the cabinet easier to wipe down and keeps the plywood from absorbing moisture and cooking odors over time. It’s worth the hour of work, especially for kitchen cabinets where steam and grease are in the air.