447 × 312 × 194 mm
475 × 363 × 210 mm
21.7 L
Internal dimensions decide whether your equipment fits — size on these plus at least 20 mm of clearance per axis. Usable interior volume is lower than the theoretical L×W×H figure because of the corner radii, the seal channel and the hardware. External dimensions decide whether the case fits a pallet, a rack or a vehicle.
KX-4821 9 Series Protective Case
A Engineering PP injection-moulded 9 series protective case with an internal envelope of 447 × 312 × 194 mm, an empty mass of 3.67 kg and a 4.5 mm wall. Supplied with a foam interior cut to your equipment.
Key features
- Internal envelope 447 × 312 × 194 mm — 27.1 L theoretical, 21.7 L usable
- External 475 × 363 × 210 mm, so the pallet and rack fit can be checked before ordering
- Engineering PP shell, moulded at 4.5 mm wall
- Empty mass 3.67 kg
- Fixed folding handle; stackable rim
- Sealing gasket can be fitted at this wall thickness
- Interior cut to your equipment: pick-and-pluck, die-cut or CNC
- Padlock-ready latches; replaceable hardware held as serviceable spares
Dimensions & technical specification
Measured on production units. Where a figure is not published it has not been measured — ask and we will confirm it for your batch.
Every value below is tagged Measured, Option or Not measured. No IP rating, drop height or stack load is implied. A certified figure is quoted as a separate accredited test against this exact configuration.
| Model | WL4821 |
|---|---|
| Series | 9 Series — Deep-body heavy case |
| Status | Active production |
| Brand | KEXIN |
| External dimensions | 475 × 363 × 210 mm |
| Internal dimensions | 447 × 312 × 194 mm |
| Lid / base depth | 144 + 50 mm |
| Wall thickness | 4.5 mm |
| Internal volume (theoretical) | 27.1 litres |
| Usable interior volume | 21.7 litres (after radius, seal channel and hardware) |
| Net weight | 3.67 kg |
| Gross weight | On request — measured per export configuration |
| Shell material | Engineering PP |
| Load capacity | Not stated without a test record |
| Wheels | None |
| Handle | Fixed folding carry handle |
| Locking | Latch body accepts a standard padlock |
| Stackable | Yes |
| Custom foam | Pick-and-pluck, die-cut or CNC-cut |
| OEM / ODM | Available — logo, colour, hardware, interior, packaging |
| MOQ — stock shell | 1 unit |
| Export carton | 765 × 485 × 650 mm · 6 pcs |
| MOQ — custom colour or logo | 300 units |
| MOQ — new mould | 3,000 units per moulded component |
| Lead time | 45 days OEM existing mould · 125 days new mould |
| Delivery terms | EXW or FOB Zhongshan / Shenzhen |
Protection features and what we can claim
Tagged by evidence level so a procurement review can tell a construction option from a test result.
Protection features
| Waterproof | — Not measured |
|---|---|
| Dust resistance | — Not measured |
| Shock protection | Yes Option |
| Impact resistance | Yes Option |
| UV resistance | — Not measured |
| Temperature range | — Not measured |
| Corrosion resistance | Yes Measured |
| Stack load | — Not measured |
| Load capacity | — Not measured |
| Seal type | Compressible gasket in continuous moulded channel Measured |
| Protection rating (IP) | — Not measured |
Interior options & foam
| Foam types | Pick & Pluck · Die-Cut · CNC-Cut · EVA · PE · EPE |
|---|---|
| Foam structure | Top foam · Base foam · Egg-crate / convoluted · Custom cut · Layered |
| Custom foam | Yes |
| Custom thickness | Yes |
| Custom shape | Yes |
| CNC cut | Yes |
| Die cut | Yes |
| What we need from you | Drawing, photograph of the packed kit, or a physical sample |
Hardware
| Handle | Fixed folding |
|---|---|
| Wheels | None |
| Lock | Padlock-ready latch |
| Latch | Count specified per configuration |
| Hinge | Replaceable pin |
| Pressure valve | Available as an option |
| Shoulder strap | Available on request |
| Feet / stacking rim | Moulded |
| Document holder | Optional |
Customisation, packaging and downloads
Customization on this shell
| OEM available | Yes |
|---|---|
| ODM available | Yes |
| Custom logo | Yes — from 300 units |
| Custom colour | Yes — from 300 units |
| Custom packaging | Yes |
| Custom hardware | Yes |
| Custom mould | Available — 125 days, MOQ from 3,000 per component |
| Private label | Yes |
Packaging & freight
| Packaging type | Export carton |
|---|---|
| Carton dimensions | 765 × 485 × 650 mm |
| Pieces per carton | 6 |
| Pallet quantity | Calculated against your pallet size on quotation |
| Container loading | 20GP / 40GP / 40HQ figures supplied with the quotation |
| Delivery terms | EXW or FOB Zhongshan / Shenzhen |
Downloads
A per-model datasheet, the full catalogue and a dimension sheet are generated from this same record, so a specification sheet can never disagree with the website.
Where this model is used
Related knowledge and projects
Container Loading For Protective Cases
Engineering Plastics In Protective Cases
Firearm & Long Equipment Transport Case Guide
Foam Inserts For Protective Cases: Types, Layers And Selection
Drone & Ground Station Case
Industrial Measurement Case
KX-4821 is a Engineering PP 9 Series case, categorised under Communication Equipment Cases / Custom Protective Cases / Drone & UAV Cases / Electronics Cases, used in Aerospace & Avionics / Defense / Drone & UAV Operations / Electronics & Instruments, with pick-and-pluck, die-cut and CNC interiors and logo, colour, hardware, packaging and mould customisation. Related reading: Container Loading For Protective Cases / Engineering Plastics In Protective Cases / Firearm & Long Equipment Transport Case Guide.
Related products
Closest alternatives, ranked by how near the internal volume sits to KX-4821.
8 Series Protective Case
External 482 × 420 × 210 mm
9 Series Protective Case
External 495 × 374 × 206 mm
6 Series Protective Case
External 475 × 383 × 188 mm
8 Series Protective Case
External 463 × 370 × 231 mm
Ordering KX-4821
What are the internal dimensions of KX-4821?
447 × 312 × 194 mm internal, 475 × 363 × 210 mm external, with a lid and base depth split of 144 + 50 mm.
What material is KX-4821 made from?
Engineering PP, injection moulded with a 4.5 mm wall.
How much does KX-4821 weigh?
Net weight 3.67 kg. Gross weight depends on the export packaging you choose and is confirmed on the quotation.
Can KX-4821 be fitted with custom foam?
Yes. Pick-and-pluck, die-cut or CNC-cut interiors are produced in-house from your drawing, a photograph of the packed kit, or a physical sample.
Is KX-4821 waterproof?
A gasket can be fitted at this 4.5 mm wall thickness and the sealing rim is continuous. We describe that as a manufacturer construction option, not an IP rating.
What is the minimum order for KX-4821?
One unit in the stock colour including custom foam. From 300 units for a custom colour or printed logo. A bespoke shell geometry requires a new mould and normally starts at 3,000 units per component.
Do you ship internationally?
Yes, EXW or FOB Zhongshan / Shenzhen. We do not offer retail sales, DDP terms or overseas-warehouse delivery.