Tomatoes are the largest fresh vegetable the United States imports, and almost all of it comes by road from Mexico through Nogales, Arizona and the Texas crossings at Pharr and Laredo. Two things changed the economics of the box in 2025 and 2026, and both land on the packaging buyer's desk.
| Fact | Figure | What it means for the box | Source |
|---|---|---|---|
| Mexican fresh tomato exports | About 1.8 million tonnes a year; USDA projects a 7 % decline in 2026 to 1.8 million tonnes | At 25 lb per box that is roughly 160 million box-equivalents a year across all formats | USDA projection as reported by FreshPlaza, August 20, 2026 |
| Mexican tomato production 2026 | Projected 2.55 million tonnes, 9 % below 2025; planted area about 38,000 ha, 11 % lower | Packers consolidate volume on fewer lines and fewer box formats | Same report |
| U.S. antidumping duty on Mexican tomatoes | 17.09 % all-others rate since July 2025, after the 2019 suspension agreement was terminated; producer-specific margins from 2.81 % to 273.43 % | Margin per box is thinner; cartons move from "whatever the broker stocks" to a specified, tendered item | U.S. Department of Commerce order, as reported by FreshPlaza, August 20, 2026 |
| Florida and other U.S. field production | Competes with Mexico from November to May in the same 25 lb carton | The 25 lb box is the price-comparison unit on the terminal market, so its weight and footprint are fixed by the trade, not by the packer | USDA AMS terminal market reports (unit of sale) |
Volumes are reported in tonnes, not boxes; the box-equivalent above is simple arithmetic at 11.34 kg per 25 lb box and ignores the lighter greenhouse formats, so treat it as an order of magnitude. This page is packaging guidance, not customs advice: confirm duty rates and the current status of any suspension agreement with your broker.
Unlike mangoes or avocados, tomatoes have no single statistical box. The format follows the growing system and the ripeness stage at harvest. These are the formats a U.S. receiver expects to see on the dock.
| Format | Net weight | Typical outside size | Fruit and growing system | How it is packed |
|---|---|---|---|---|
| 25 lb bulk carton | 25 lb (11.3 kg) | 43 × 29 × 22 cm (≈ 17 × 11.5 × 8.5 in) | Round field tomatoes (Sinaloa, Baja California, Florida); romas also ship in 25 lb | Bulk fill, mature-green or breaker; sized 4×4, 4×5, 5×5, 5×6, 6×6, 6×7 by diameter |
| 20 lb roma carton | 20 lb (9.1 kg) | Same footprint, lower height | Roma and saladette, field and shade-house | Bulk fill, loose |
| 15 lb single-layer box | 15 lb (6.8 kg) | One layer, open or lidded tray | Greenhouse beefsteak and round, vine-ripe | Place-packed in one layer, often with a tray or paper divider; sized by count |
| 10 lb single-layer box | 10 lb (4.5 kg) | One layer, open tray | Greenhouse beefsteak, round, heirloom | Place-packed, lidded for higher stacks |
| 11 lb tomato-on-the-vine (TOV) box | 11 lb (5 kg) | One layer, open tray, 40 × 30 cm footprint common | Greenhouse cluster tomatoes | Clusters laid in one layer, vine side up |
| 12 × 1 lb clamshell master | 12 lb (5.4 kg) | Tray holding 12 clamshells or 12 dry pints | Cherry, grape, cocktail, snacking tomatoes | Retail units packed at origin; the master carton protects the clamshells |
Sizes and net weights are U.S. trade practice for product crossing from Mexico and shipped from Florida; receivers and retailers set their own specification sheets. The ratio "6×6" and similar refers to how many fruit fit across and down one layer of a 25 lb box, so a larger number means smaller fruit.
A tomato carton is loaded wet. Field fruit is washed, chlorinated and waxed before packing, and the box then spends days at 90 to 95 % relative humidity, often in a ripening room where ethylene and warm air soften the board further. The number that matters is compression strength after humid conditioning, not the dry figure on the quotation. The method is explained in our banana carton guide, which covers the same humid cold chain.
| Parameter | 25 lb and 20 lb bulk carton | 15 lb, 10 lb and TOV single-layer box | Basis |
|---|---|---|---|
| Board | Double wall, BC flute, minimum 48 ECT; 51 ECT for pallets above 9 layers or for ripening-room programmes | Single wall C flute 32 to 44 ECT for open trays; 44 ECT or double wall when the tray is lidded and stacked 12 high | Trade practice; ask for the measured ECT of the board offered |
| Construction | Regular slotted carton or telescoping two-piece; one-piece with reinforced corners where the pack line is automated | Self-locking one-piece tray with corner posts, lid optional | Trade practice |
| Paper and coating | Kraft liners with moisture-resistant treatment; we recommend wax-free board so the carton stays recyclable | Same, white top liner for print | Fuxing recommendation |
| Ventilation | Openings on all four faces and in the base, aligned between layers so forced-air cooling crosses the pallet; 4 to 6 % of the side area is a usual target | Hand holes doubling as vents; base vents aligned with the tray below | UC Davis cooling guidance and trade practice |
| Inside protection | None for bulk; a paper pad on the base reduces bruising | Moulded tray or paper divider under the fruit | Trade practice |
| Flexo 1 to 3 colours: brand, size ratio, net weight, country of origin, packhouse and lot | Flexo up to 4 colours; PLU and brand visible when the lid is removed | Trade practice; FSC paper on request |
Our corrugated carton page lists the board grades we run in Dongguan, Hai Phong and Davao, and the produce packaging supplier checklist sets out what to demand in writing before you sign.
The 25 lb box is dense: 11.3 kg of fruit in 27 litres. A pallet of it is heavy long before it is tall, and a 53 ft trailer reaches its legal payload with pallets to spare. That is the opposite of mangoes and berries, which fill the equipment by volume. The arithmetic below uses the 43 × 29 cm footprint on a 48 × 40 in (1,219 × 1,016 mm) GMA pallet.
| Box | Footprint | Boxes per layer on 48 × 40 in | Layers | Boxes per pallet | Net fruit per pallet | Gross pallet (box + pallet ≈ 60 kg) |
|---|---|---|---|---|---|---|
| 25 lb bulk carton | 43 × 29 cm | 8 (two rows of four, column stacked) | 9 to 10 | 72 to 80 | 816 to 907 kg (1,800 to 2,000 lb) | ≈ 880 to 970 kg |
| 20 lb roma carton | 43 × 29 cm | 8 | 11 to 12 | 88 to 96 | 798 to 871 kg | ≈ 860 to 930 kg |
| 15 lb single-layer tray | Varies by receiver; a 40 × 30 cm tray gives 10 per layer | 10 | 10 to 12 | 100 to 120 | 680 to 816 kg | ≈ 750 to 880 kg |
| Equipment | Pallet positions | Limiting factor | 25 lb boxes carried | Net fruit |
|---|---|---|---|---|
| 53 ft reefer trailer, U.S. highway (about 20 t legal payload with a reefer unit) | 26 single-stacked | Weight: 20 to 22 pallets at 880 to 970 kg gross | 1,440 to 1,760 | 16.3 to 20 t |
| 40 ft high-cube reefer container, sea freight (payload ≈ 26 t, but check the inland road limit at destination) | 20 to 21 | Road weight limit after discharge, not the container | 1,440 to 1,680 | 16.3 to 19 t |
Column stacking (box directly on box, no interlocking) carries 20 to 30 % more load than interlocked layers; use corner boards and five to seven horizontal straps and keep the pattern columnar. Legal road payload depends on the tractor, trailer and reefer weight and on the state; the 20 t figure is a planning value. Confirm your own pattern against the wet compression of your carton: with a 48 ECT double-wall 25 lb box, ten layers of 11.3 kg each put about 102 kg on the bottom box, well inside the usual safety factor of three, but only if the box arrives at the cold room with its strength intact.
Tomatoes are chilling-sensitive. Mature-green fruit held below 10 °C (50 °F) ripens unevenly and loses flavour; ripe fruit tolerates lower temperatures for a few days. Field packers therefore ship mature-green or breaker fruit warm and ripen it at destination with ethylene, and the carton goes through a warm, humid ripening room before it ever reaches a retailer.
| Ripeness stage at packing | Holding temperature | Relative humidity | Storage life | Packaging consequence |
|---|---|---|---|---|
| Mature green | 12.5 to 15 °C (55 to 59 °F) | 90 to 95 % | 14 to 21 days before ripening | Bulk 25 lb carton; ripened at destination with 100 ppm ethylene at 20 to 25 °C, so board must survive a warm humid room |
| Breaker to pink | 10 to 12.5 °C (50 to 55 °F) | 90 to 95 % | 7 to 14 days | Bulk carton or single-layer tray; vents sized for forced-air cooling |
| Light red | 10 °C (50 °F) | 90 to 95 % | 5 to 7 days | Single-layer tray for greenhouse fruit; lid optional |
| Firm ripe (red) | 7 to 10 °C (45 to 50 °F) | 90 to 95 % | 3 to 5 days | Single-layer or retail clamshell; shortest chain, highest board humidity |
Temperatures, humidity and storage life follow the UC Davis Postharvest Technology Center produce fact sheet for tomato. Chilling injury (pitting, uneven ripening, decay) appears after days below 10 °C in mature-green fruit. Cooling is by forced air; tomatoes are not hydrocooled or iced, which is why the carton vents matter more than water resistance on the outside and why a wax-free, moisture-treated board is enough.
Field tomatoes are picked mature-green into buckets and tipped into bulk bins or gondolas; greenhouse fruit is picked ripe into lugs or crates and carried to the packhouse on the same day. The package used on that stretch rarely appears in the carton tender, and it is where bruises and split skins are made. A tomato packed into a 15 lb tray with a pressure mark from the harvest lug is downgraded at the receiver, not at the farm.
| Option | Capacity and usual dimensions | Advantages | Limits | Relative cost per trip |
|---|---|---|---|---|
| Picking bucket and bulk bin or gondola | Bucket 10 to 12 kg; bin 400 to 500 kg | Fastest for mature-green field harvest; mechanical dump | Only for firm mature-green fruit; ripe fruit bruises at the bottom of a bin | Lowest for mature-green programmes |
| Injection-moulded rigid crate | 15 to 20 kg; 600 × 400 × 250 mm typical | Very strong, stackable, washable | Does not fold: the return truck travels full of air; hard edges mark ripe fruit if overfilled | Low if it lasts several seasons; high in return logistics |
| Single-use corrugated cardboard lug | 10 to 15 kg | No return, no washing | A new box every trip; softens with dew and wash water | The highest where the same line runs more than 3 trips a week |
| Foldable PP corrugated plastic box | 15 to 20 kg; 600 × 400 × 250 to 300 mm; 4 to 5 mm sheet | Washed and sanitised, absorbs no water or juice, smooth interior, folds flat to about a quarter of its volume, printed with block and lot | Must be recovered: needs inventory control between greenhouse and packhouse | Pays back over tens of trips; after that it costs only the wash |
How to specify sheet thickness, sheet weight and static load is in the PP produce box specification template, the thickness choices in the corrugated plastic thickness guide, and the per-trip maths in the harvest bins cost guide and in PP box vs cardboard. Capacities and dimensions are typical values, not test results; ask for the static load of the exact crate quoted.
U.S. importers of PP corrugated boxes, note: boxes made in our Philippine plant carry 0% U.S. AD/CVD — not 0% import duty; 12.5% Section 301 (since Jul 24, 2026) + normal HTSUS duty, confirm with your broker. Details in PP boxes from the Philippines.
For printed cartons and PP crates made in Asia the arithmetic for Mexico is 1 to 2 weeks of artwork and samples, 3 to 4 weeks of factory time, 30 to 35 days at sea to Manzanillo, Lázaro Cárdenas or Ensenada and about a week of clearance and inland transport: 10 to 12 weeks in total. For Florida, count 30 to 40 days at sea to Port Everglades or Miami plus clearance.
| Region and system | Shipping window to the U.S. | Order close (10 to 12 weeks before first shipment) | What is bought |
|---|---|---|---|
| Sinaloa, open field and shade house (Culiacán) | December to May, peak February to April | September to October (now) | 25 lb bulk cartons, 20 lb roma cartons, PP harvest crates, bin liners |
| Baja California, open field and greenhouse (San Quintín, Mexicali) | May to November | February to March | 25 lb cartons, 15 lb and 10 lb trays, clamshell masters |
| Jalisco, San Luis Potosí, Querétaro, Guanajuato greenhouses | Year round, peak October to June | Rolling; book the next quarter 10 to 12 weeks ahead | 15 lb and 10 lb trays, TOV boxes, 12 × 1 lb masters, PP crates |
| Michoacán and Morelos shade house | October to April | July to August | Roma cartons, 15 lb trays |
| Florida, open field | October to June, peak December to January and April to May | July to August and January to February | 25 lb bulk cartons, PP harvest crates for packhouse loops |
If the order closes late there are two honest ways out: unprinted cartons and standard crates (2 to 3 weeks of factory time), or consolidating corrugated cartons, PP crates and retail bags and nets in one container so you do not wait for two shipments.
| Component | Data to demand in writing | Why it matters |
|---|---|---|
| 25 lb, 20 lb and single-layer cartons | Flute and number of walls, liner and medium basis weights, ECT, compression strength measured after humid conditioning, position and percentage of ventilation, inside and outside dimensions, stacking pattern on a 48 × 40 in pallet, print type, FSC | Decides whether the pallet arrives straight after a week at 90 to 95 % humidity and a warm ripening room |
| PP harvest crate | Sheet thickness in mm, sheet weight, static and dynamic load, ventilation, washing and sanitising method, folded quantity per container | Sets reuse and cost per greenhouse-to-packhouse trip |
| Retail unit | Clamshell or bag material, microns, size, print, PLU and barcode, masters per pallet | Supermarket programmes; see the produce bags guide |
| Supplier | ISO 9001 / ISO 14001, FSC, SGS verification; physical samples before the order; minimum quantity; true factory lead time plus transit; one technical contact | Backs your claim if the packaging does not meet its data sheet |
Fuxing Group manufactures FSC corrugated cartons, foldable PP corrugated plastic boxes and fruit and vegetable bags in China, Vietnam and the Philippines, with ISO 9001 and SGS verification. We deliver basis weights, wet compression, thickness and static load in writing with every quotation, send samples before the order and consolidate cartons, crates and bags in the same container. Quotation in English or Spanish within 12 hours.
Quote on WhatsApp Email jacky@fuxinggroup.cn