Reefer container internal dimensions are the most critical information when planning how to position your cargo. While external dimensions show the space the container occupies, internal dimensions reveal the area you can actually use. In reefer containers, internal dimensions are significantly smaller than external dimensions due to insulation panels and cooling ducts.
Reefer Container Internal Dimensions Comparison
| Feature | 20' Standard | 40' Standard | 40' High Cube |
|---|---|---|---|
| Internal Length | 5,442 mm | 11,577 mm | 11,577 mm |
| Internal Width | 2,294 mm | 2,294 mm | 2,294 mm |
| Internal Height | 2,210 mm | 2,210 mm | 2,515 mm |
| Internal Volume | ~28.5 m³ | ~59.3 m³ | ~67.7 m³ |
| Useful Height | 2,210 mm | 2,210 mm | 2,515 mm |
Why Are Internal Dimensions Smaller?
Reefer container internal dimensions are approximately 15-20 cm smaller than external dimensions. The main reasons are:
- Insulation Panels: Walls, floor, and ceiling are insulated with 7-10 cm thick polyurethane foam.
- Air Ducts: The T-bar floor structure and ceiling air channels occupy interior space.
- Refrigeration Unit: The cooling unit at the front of the container occupies approximately 30-40 cm of depth.
- Door Mechanism: The double-sealed door system requires additional space.
Pallet Layout
EUR pallets (1200x800 mm) and ISO pallets (1200x1000 mm) can be placed in reefer containers. Proper pallet layout directly impacts loading efficiency.
| Pallet Type | 20' Reefer | 40' Reefer | 40' HC Reefer |
|---|---|---|---|
| EUR Pallet (1200x800) | 10 pallets (2 rows) | 20 pallets (2 rows) | 20 pallets (2 rows) |
| ISO Pallet (1200x1000) | 10 pallets (2 rows) | 20 pallets (2 rows) | 20 pallets (2 rows) |
| Max Stack Height | 2,000 mm | 2,000 mm | 2,300 mm |
Loading Tips
- Do not block airflow: Leave at least 5-10 cm clearance between cargo and walls.
- Ensure cold air return: Do not cover the T-bar floor channels.
- Place heavy loads at the bottom: Heavy pallets should be placed in the bottom row for stacking stability.
- Do not place non-temperature-sensitive cargo in reefer containers: Prevent energy waste.
Frequently Asked Questions
Reefer konteynere kaç palet sığar?
20' reefer konteynere 10 EUR palet (2 sıra halinde), 40' reefer konteynere ise 20 EUR palet sığar. Palet yerleşimi palet boyutuna göre değişebilir.
İç boyutlar dış boyutlardan neden küçük?
Yalıtım panelleri, hava kanalları ve soğutma ünitesi iç mekanda yer kaplar. Reefer konteynerlerde iç boyutlar dış boyutlardan yaklaşık 15-20 cm daha küçüktür.
Palet yüklerken hava akışı neden önemli?
Reefer konteynerlerde soğuk hava, zemindeki T-bar kanallarından girip yüklerin arasından geçerek soğutma sağlar. Hava akışının engellenmesi sıcaklık dengesizliğine yol açar.