Guide · Sandwich boxes

What size sandwich box fits triangle wedges, subs, and catering trays?

Short answer: Size triangle wedges by Bread Leg × Bread Leg × Spine Depth, and rectangular sub, sando, or catering cartons by inside Length × Width × Height. Popular sizes for custom sandwich boxes are 5.0 × 5.0 × 2.75 in for two-slice wedges and 5.25 × 3.75 × 2.75 in for Japanese sandos.

Quote sandwich boxes
Triangle wedge box, rectangular sando box, 7-inch sub box, and 16 × 12 inch catering platter comparing sizes
On this page
  1. How do you measure a triangle sandwich wedge box (legs, hypotenuse, and spine)
  2. What is the complete size chart for wedges, sandos, subs, wraps, and platters
  3. How do you size rectangular boxes for Japanese sandos, bagels, and croissants
  4. What dimensions fit 6-inch subs, 12-inch baguettes, lobster rolls, and tortilla wraps
  5. How do you size individual corporate boxed lunches and group catering platters
  6. Common mistakes
  7. FAQs
Request a custom quoteFree dieline & 3D mockup

Sandwich packaging relies on a snug fit to keep sliced layers upright and attractive behind the display window. Unlike a round cake or a square burger that sits flat on one base panel, a grab-and-go sandwich is almost always sliced in half and stood on its crust edge so the customer sees the turkey, avocado, bacon, or tonkatsu cross-section through the front film. If a triangular wedge box has a 3.5-inch spine depth when your two sandwich halves only measure 2.4 inches thick combined, the two triangles tip backward away from the window and spill their fillings before the box ever reaches the cold case. Matching the two right-angle leg measurements to your loaf slice size and the spine depth to your exact stacked thickness keeps every layer pressed neatly against the window. At CubitPack, we cut every wedge, sando box, sub sleeve, and platter to order with zero die fees.

How do you measure a triangle sandwich wedge box (legs, hypotenuse, and spine)?

A grab-and-go triangle wedge box is a three-dimensional right-angle prism. Because two sandwich halves cut corner-to-corner from a square loaf sit side by side inside the triangle, three measurements control the fit: the two equal 90-degree Crust Legs (bottom and vertical back height), the angled Diagonal Hypotenuse where the clear window sits, and the Spine Depth (left-to-right width across the back loading flap). When you build a sandwich on a standard 4.5 × 4.5 inch commercial Pullman slice and cut it diagonally from corner to corner, the diagonal cut edge measures roughly 6.35 inches long. Adding 1/2 inch to each crust leg gives you a 5.0 × 5.0 inch right triangle whose diagonal window face is roughly 7.0 inches long. When requesting a quote for printed deli sandwich wedges, measure the combined thickness of both finished sandwich halves standing side by side and add 1/8 inch to set your Spine Depth.

  1. Step 1 (Crust Legs L × H): measure the square bread slice width and height (e.g., 4.5 in) and add 1/2 inch for crust overhang (5.0 × 5.0 in).
  2. Step 2 (Diagonal Window Face): automatically equals 1.414 × the crust leg length (roughly 7.0 in on a 5.0 × 5.0 in wedge).
  3. Step 3 (Spine Depth W): measure the total thickness of both halves placed side by side (2.75 in for standard 2-slice, 3.5 in for 3-slice club).
  4. Step 4 (Rear Flap Clearance): leave 1/8 inch of breathing room so the two halves slide in through the back flap without catching lettuce.

What is the complete size chart for wedges, sandos, subs, wraps, and platters?

Every CubitPack sandwich box is cut to your exact inside dimensions with no die or plate charges. Use the master table below to match your bread loaf, baguette length, or catering headcount to the proven industry starting sizes. Notice how triangle wedges are listed by Leg × Leg × Spine Depth, while rectangular cartons use inside Length × Width × Height.

Sandwich or platter typeInside box dimensions (in)Recommended structure & window
Standard 2-slice triangle wedge (4.5 in Pullman)5.0 × 5.0 × 2.75 in (7.0 in diagonal)Triangle wedge with diagonal L-window
Triple-decker club or thick sourdough wedge5.25 × 5.25 × 3.5 in (7.4 in diagonal)Deep-spine triangle wedge box
Japanese katsu / egg / fruit sando (2 halves)5.25 × 3.75 × 2.75 inRectangular top-window tuck or hinged box
Single half sando or thick brioche toast5.0 × 2.25 × 2.75 inCompact single-half window sleeve
Tortilla wrap / burrito / flatbread sleeve3.75 × 2.25 × 7.5 in (or 5.5 in half-wrap)Tapered wrap sleeve with center tear strip
6-inch sub / banh mi / split-top lobster roll7.0 × 3.25 × 3.0 inOblong clamshell or open-top boat cradle
12-inch footlong hoagie / French baguette13.0 × 3.5 × 3.25 inLong oblong clamshell or windowed sleeve
Individual corporate boxed lunch (meal kit)9.0 × 6.5 × 3.75 inGable or auto-lock box (sandwich + chips + cookie)
Small office catering platter (8–10 halves)12.0 × 10.0 × 3.5 inCorrugated lock-corner window tray
Large corporate catering platter (16–20 halves)16.0 × 12.0 × 3.5 inCorrugated window platter + 4-bay insert

Save this size chart

Every size on this page on one sheet. Pin it for later.

How do you size rectangular boxes for Japanese sandos, bagels, and croissants?

Not every sandwich looks good cut into a 45-degree triangle. Japanese katsu sandos (thick pork or chicken cutlets in soft shokupan milk bread), tamago egg salad sandos, strawberry whip fruit sandos, and overstuffed bagel or croissant sandwiches are sliced straight across the center into two thick rectangular blocks. To show off that dramatic center cross-section, the two halves are rotated 90 degrees so the cut faces point straight up toward the ceiling, then placed side by side inside a flat rectangular box with a large top patch window. For standard 4.5-inch shokupan bread sliced into two halves that each measure 2.25 inches tall when laid cut-side up, a 5.25 × 3.75 × 2.75 inch custom window box frames both halves tightly with zero empty gap around the edges. For round overstuffed New York bagel sandwiches or flaky croissant sandwiches cut in half and stood cut-side up, widen the box to 5.5 × 4.25 × 3.25 inches to clear the curved crust.

5.25 × 3.75 inch rectangular top-window sando box beside a 5.0 × 5.0 inch diagonal triangle wedge

Know your size? Compare pricing across up to 3 quantities.

Request a Quote →

What dimensions fit 6-inch subs, 12-inch baguettes, lobster rolls, and tortilla wraps?

Long cylindrical sandwiches need narrow front-to-back support so the roll cannot roll over on its side and spill shredded lettuce or dressed slaw. For a standard 6-inch sub roll, Vietnamese baguette banh mi, or New England split-top brioche lobster roll, a 7.0 × 3.25 × 3.0 inch oblong box gives 1/2 inch of end clearance while the 3.25-inch side walls hold the split roll upright so mounded lobster meat or pickled daikon stays on top. For 12-inch footlong hoagies and Italian hero loaves, step up to a 13.0 × 3.5 × 3.25 inch oblong hinged clamshell or a two-part slide sleeve lined with custom butter paper. If your cafe sells rolled 10-inch or 12-inch flour tortilla wraps, caesar wraps, or breakfast burritos in a grab-and-go case, a vertical 3.75 × 2.25 × 7.5 inch tapered carton with a center perforated zipper tear strip lets the customer peel off the upper half of the box and eat the wrap cleanly on the train without unwrapping messy foil.

  1. Split-top lobster roll cradle: 6.5 × 2.75 × 2.5 in open-top tray holds buttered brioche sides snug.
  2. 6-inch sub or banh mi clamshell: 7.0 × 3.25 × 3.0 in hinged carton with rear steam notches.
  3. 12-inch footlong sub box: 13.0 × 3.5 × 3.25 in oblong clamshell or windowed slide sleeve.
  4. Rolled tortilla wrap box: 3.75 × 2.25 × 7.5 in upright sleeve (or 5.5 × 3.75 × 2.5 in for two diagonal wrap halves).
7-inch banh mi and lobster roll box beside a 13-inch footlong baguette clamshell

How do you size individual corporate boxed lunches and group catering platters?

Corporate catering is one of the highest-margin channels for any deli or bakery-cafe, and it uses two main box footprints: the individual conference boxed lunch and the shared conference-table platter. An individual boxed lunch typically holds one wrapped sandwich or triangle wedge, a 1 to 1.5 oz bag of kettle chips, a whole apple or side cup of pasta salad, a pickle spear, and a cookie. A 9.0 × 6.5 × 3.75 inch auto-lock bottom custom gable box or lock-corner tuck box fits that entire five-item meal comfortably while stacking 10 high in a delivery van. For shared meeting platters, a 16.0 × 12.0 × 3.5 inch E-flute custom corrugated box with a large top display window and a four-compartment custom cardboard insert holds 16 to 20 sandwich halves or 24 tortilla wrap pinwheels without letting flavors slide together on the drive to the office.

  1. Solo executive lunch box: 9.0 × 6.5 × 3.75 in auto-lock tuck or gable carrier.
  2. Small 8–10 half meeting tray: 12.0 × 10.0 × 3.5 in E-flute lock-corner window box.
  3. Standard 16–20 half office platter: 16.0 × 12.0 × 3.5 in E-flute window box with 4-bay divider insert.

What are the most common sandwich box sizing mistakes?

Avoid these five frequent dimension errors when ordering custom wedge, sando, and catering boxes

  1. Ordering a 3.5-inch deep club wedge for a standard 2-slice sandwich, which lets the two halves fall backward away from the window.
  2. Measuring only the square bread slice without adding 1/2 inch for overhanging lettuce, tomato, bacon, and crust corners.
  3. Trying to pack straight-cut Japanese katsu sandos into a diagonal triangle wedge instead of a 5.25 × 3.75 in rectangular window box.
  4. Using a 4.5-inch wide burger box for a narrow 6-inch sub or lobster roll, letting the roll tip sideways and spill its toppings.
  5. Building a 16 × 12 inch catering platter out of thin folding card instead of E-flute corrugated board that supports 5 pounds of food.

Find your size

Size finder

Suggested inside size: 5.0 × 5.0 × 2.75 in

A starting point. Your account manager confirms the size with you before the proof.

Quote this size →

Packaging for this

Ready to order sandwich boxes? Compare up to 3 quantities with a free 3D mockup.

Request a Quote →
FAQ

Questions about sandwich boxes

What is the standard triangle sandwich wedge box size?

The standard size for a two-slice sandwich cut diagonally from a 4.5 × 4.5 inch Pullman loaf is 5.0 × 5.0 × 2.75 inches (with a 7.0-inch diagonal window face). For triple-decker club sandwiches with three slices of bread, step up to a 5.25 × 5.25 × 3.5 inch wedge.

How do I measure Spine Depth on a triangle sandwich wedge?

Assemble your sandwich, slice it diagonally into two triangles, and stand both halves side by side with their cut faces aligned. Measure across the back from the left crust to the right crust and add 1/8 inch - that number is your Spine Depth.

What size box fits a two-half Japanese katsu sando or egg salad sando?

A 5.25 × 3.75 × 2.75 inch rectangular window box is the standard size for two straight-cut halves of shokupan milk-bread sandos placed cut-side up beneath a top display window.

What dimensions do I need for a 6-inch or 12-inch sub sandwich box?

Use a 7.0 × 3.25 × 3.0 inch oblong box for a 6-inch sub, banh mi, or lobster roll, and a 13.0 × 3.5 × 3.25 inch oblong clamshell or sleeve for a 12-inch footlong hoagie or baguette.

Can I order individual wedge boxes and large catering platters together?

Yes. Many cafes order their 5 × 5 in grab-and-go triangle wedges and their 16 × 12 in E-flute corrugated catering platters in the same order with matched Pantone branding and zero die charges.

Can I see a 3D mockup of my sandwich box and window before paying?

Yes. Every order includes a free custom dieline proof and an interactive 3D mockup before payment. You can also order our $50 sample kit (credited toward your order) or request a paid physical prototype.

Still have a question? Ask a packaging specialist.

Request a Quote →

Request your sandwich boxes quote

Tell us your size and quantities, and one dedicated account manager prepares pricing for each tier.

  • Free design & AI-to-print studio + 3D mockup
  • No die or plate charges · 4–5 day rush available
  • Free shipping to all 50 states
  • 10% off your first order
How we made this guide

The right-triangle hypotenuse geometry (leg × 1.414) and spine depth measurements in this guide are based on standard US Pullman loaf slices (4.5 × 4.5 in and 5 × 5 in), Japanese shokupan loaves, and commercial sub rolls. A CubitPack packaging specialist verified every row. Spot an error? Tell us and we will fix it.

Published October 22, 2026Updated October 22, 2026Next review January 20, 2027
Sources
  1. Folding carton right-angle wedge geometry and window patching clearances
  2. Chilled grab-and-go sandwich packaging considerations
What changed
  • October 22, 2026: First published.
  • October 22, 2026: Updated specifications, terminology, and verified source links.
SharePinterestLinkedIn
Helpful?

More guides

New packaging guides by email

Sizes, materials and design tips. Unsubscribe anytime.