ENGINEERING DATASHEET · 24–30 DNS CLOSED-CELL EPS

Technical Specifications, Dimensions Table & 24–30 DNS EPS Standards

Complete dimension tables (external/internal sizes, wall thickness, liter volume, carton pack) for B-01..B-10 and D-500/D-1000 plus 24–30 DNS thermal conductivity specs.

1. Master External/Internal Dimensions, Wall Thickness & Carton Table

For cold-chain logistics, both external stacking dimensions and net internal payload dimensions (including gel ice packs) must be verified.

Code Model Name	Ext. / Int. Dimensions (mm)	Capacity & Volume	1 Carton	30 Cartons (MOQ)	Quick Quote
B-01 Standard EPS Fish & Cold-Chain Food Box (3–5 Kg)	Ext: 397 × 298 × 170 mm Int: 365 × 263 × 132 mm	3 – 5 Kg 12.7 Liters · 16 – 18 mm	12 Pcs	360 Units	Get Price
B-02 Medium EPS Fish & Meat Cold-Chain Box (7–10 Kg)	Ext: 495 × 395 × 190 mm Int: 453 × 355 × 144 mm	7 – 10 Kg 23.1 Liters · 20 – 23 mm	8 Pcs	240 Units	Get Price
B-03 Deep Heavy-Duty Cold-Chain EPS Box (12–15 Kg)	Ext: 503 × 406 × 268 mm Int: 463 × 365 × 203 mm	12 – 15 Kg 34.3 Liters · 20 – 32 mm	6 Pcs	180 Units	Get Price
B-04 Flat EPS Fish Crate & Display Box (5–7 Kg)	Ext: 510 × 325 × 140 mm Int: 475 × 290 × 105 mm	5 – 7 Kg 14.5 Liters · 17,5 mm	14 Pcs	420 Units	Get Price
B-05 E-Commerce EPS Food & Delicatessen Parcel Box (4–6 Kg)	Ext: 400 × 300 × 174 mm Int: 367 × 267 × 135 mm	4 – 6 Kg 13.2 Liters · 16,5 – 19 mm	12 Pcs	360 Units	Get Price
B-06 Extra Thick-Walled (27 mm) Thermal EPS Box (8–12 Kg)	Ext: 480 × 360 × 203 mm Int: 426 × 306 × 174 mm	8 – 12 Kg 22.7 Liters · 27 mm (Symmetric Armor Wall)	10 Pcs	300 Units	Get Price
B-07 Jumbo Export & Air Cargo EPS Salmon/Fish Box (20–25 Kg)	Ext: 790 × 400 × 240 mm Int: 730 × 340 × 165 mm	20 – 25 Kg 40.9 Liters · 30 – 37 mm (Reinforced Export Body)	5 Pcs	150 Units	Get Price
B-08 Interlocking Stackable EPS Fish Crate (5 Kg)	Ext: 505 × 320 × 130 mm Int: 465 × 285 × 100 mm	5 Kg 13.2 Liters · 20 mm	14 Pcs	420 Units	Get Price
B-09 Black Sea Standard EPS Anchovy Crate (10 Kg)	Ext: 590 × 390 × 140 mm Int: 545 × 345 × 100 mm	10 Kg (Anchovy + Ice) 18.8 Liters · 22,5 mm	8 Pcs	240 Units	Get Price
B-10 Shallow EPS Bonito, Bluefish & Mackerel Crate (8–10 Kg)	Ext: 590 × 390 × 120 mm Int: 545 × 345 × 80 mm	8 – 10 Kg (Single-Layer Pack) 15 Liters · 22,5 mm	8 Pcs	240 Units	Get Price
D-1000 1 Kg (1000g) EPS Ice Cream & Gelato Thermal Box (25 mm Wall)	Ext: 255 × 206 × 167 mm Int: 205 × 155 × 120 mm	1 Kg (1000g — 3.8 L) 3.8 Liters · 25 mm (Ultra Insulation)	24 Pcs	720 Units	Get Price
D-500 Half-Kilo (500g) EPS Ice Cream & Medical Sample Box	Ext: 246 × 155 × 125 mm Int: 215 × 122 × 100 mm	0,5 Kg (500g — 2.6 L) 2.6 Liters · 16,5 – 25 mm	45 Pcs	1350 Units	Get Price

2. High-Density EPS Material & Thermal Properties

Raw Material	100% Virgin Food-Grade Expanded Polystyrene (EPS)
Molded Density (DNS)	24 – 30 kg/m³ (DNS) (EN 1602)
Thermal Conductivity (λ)	0.032 – 0.035 W/(m·K) (+10°C, EN 12667)
Cell Structure	98% Closed-Cell Matrix (98% trapped still air)
Water Absorption / Leakproof	< %1.5 (EN 12087) · Zero meltwater seepage
Compressive Strength (10%)	150 – 220 kPa (EN 826) · 6–8 high stacking in reefers
Operating Temperature Range	-80°C (Kuru Buz) .. +70°C
Food Contact Compliance	Turkish Food Codex & EU 1935/2004 Compliant

3. Gel Ice Pack & Dry Ice Sizing Matrix by Transit Time

Product / Regime	Box Model	Coolant Ratio	Hold Time
Fresh Fish (0/+4°C)	B-04, B-08, B-09, B-10	25% Flake Ice / Gel	36 – 48 Hours
Meat & Dairy (+2/+6°C)	B-01, B-02, B-03, B-05	2–4× 400g Gel Packs	24 – 36 Hours
Ice Cream (-18/-22°C)	D-500, D-1000	Pre-Chilled (-24°C) / Dry Ice	6 – 24 Hours
Air Cargo Export	B-06, B-07, B-10	30% Sealed Gel Bricks	48 – 72 Hours

Engineering Note: Always place gel ice packs on top of the payload rather than underneath, allowing cold dense air to sink uniformly through the box.

24-30 DNS Closed-Cell EPS Structure and Interlocking Lid

Interlocking Lid Sealing & Strapping Standards

• Step-jointed interlocking lid rims eliminate thermal bridging and prevent warm ambient air infiltration.
• For courier and air-cargo transit, seal the lid perimeter with 48 mm hot-melt tape and secure with 12 mm PP strapping.

Gebze Warehouse Wholesale EPS Box Carton Dispatch & Stacking

Cold Storage & Reefer Truck Stacking Guidelines

• High-density 24–30 DNS side walls allow loaded boxes to be stacked 6 to 8 tiers high in reefer trucks without crushing.
• Empty boxes are dispatched from our Gebze warehouse sealed in heavy-duty polyethylene protective packs.

Frequently Asked Questions

Common questions regarding board selection, reuse cycles, technical parameters, and global delivery.

What is an EPS styrofoam fish box (thermobox)?

An EPS fish box is a closed-cell thermal container composed of 98% trapped still air and 2% food-grade Expanded Polystyrene (EPS), designed to insulate fresh seafood, meat, dairy, ice cream, and pharmaceuticals against ambient heat.

How many hours do EPS fish boxes keep products cold?

Depending on wall thickness (16 mm to 37 mm), pre-chilling, and refrigerant quantity (gel packs or dry ice), our standard boxes (B-01, B-05) maintain cold chain for 24–40 hours, while thick-walled models (B-02, B-03, B-06, B-07, D-1000) protect for 48 to 96 hours.

Is the EPS raw material certified for direct food contact?

Yes. All our fish, food, and ice cream boxes are molded from 100% virgin food-grade EPS resin compliant with the Turkish Food Codex and EU Regulation 1935/2004. Recycled or construction-grade scrap styrofoam is never used.

What does 24–30 DNS (Density) mean in EPS boxes?

DNS represents the density in kg/m³. While construction foam is only 12–16 DNS, our cold-chain boxes are molded at 24–30 DNS high density, ensuring watertight walls, impact resistance, and high vertical stacking strength.

Do EPS fish boxes leak water or melted ice?

No. Molded at 24–30 DNS high density with complete steam-bead fusion, the monolithic EPS body is 100% waterproof. Taping the interlocking lid joint ensures total leak-proof containment for courier and air cargo.

What is the thermal conductivity coefficient (Lambda - λ) of your EPS boxes?

Our 24–30 DNS cold-chain EPS boxes feature a thermal conductivity coefficient of λ = 0.032 – 0.035 W/(m·K), providing exceptional thermal resistance against summer heat.