Quick answer: The carcass is the cabinet box (sides, base, top, back and shelves) that carries every door, drawer and appliance. An aluminium carcass built from honeycomb-reinforced panels with welded joints stays rigid and waterproof for years, while a hollow or only screwed carcass can flex, loosen or dent. It is the part you cannot see in a showroom, so it is the part to ask about.
What Is a Kitchen Cabinet Carcass?
A kitchen cabinet has two parts: the doors and fronts you see, and the carcass behind them. The carcass includes the side panels, base, top rail, back panel, shelves and the plinth (the base under the cabinet). Hinges, drawer runners and wall fixings all attach to it, so its strength decides how the cabinet behaves after years of daily use.
Aluminium Carcass Options
| Carcass type | How it is built | Strength | Typical trade-off |
|---|---|---|---|
| Hollow aluminium frame | Thin aluminium sheets or extrusions, often clipped or screwed | Lower, can flex or dent | Lower cost, less rigid |
| Honeycomb aluminium panel | Aluminium skins with a honeycomb core, joined together | High stiffness for the weight | Higher cost, much more solid |
| Honeycomb panel with welded joints | Honeycomb panels with welded corners and frames | Highest rigidity | Best long-term performance |
Our cabinets use the third option. See how honeycomb works in our honeycomb aluminium cabinet guide.
Details That Matter in a Carcass
- Panel construction: honeycomb core or hollow? Ask the supplier directly.
- Joints: welded corners stay rigid, while only screwed or clipped joints can loosen over time.
- Plinth and base: the plinth sits closest to floor water and cleaning. A waterproof plinth avoids the swelling seen in wood-based plinths.
- Edges and finish: sealed edges and a durable laminate or powder-coat finish resist moisture and wear.
- Hardware mounting: hinges and runners should fix to reinforced points so they do not pull out.
- Back panel and ventilation: cabinets that house appliances need ventilation gaps and a back that does not trap moisture.
Questions to Ask Before You Buy
- Is the carcass honeycomb-reinforced or hollow aluminium?
- Are corners welded, or only screwed and clipped?
- What is the plinth made of?
- What hardware brand is used, and how is it mounted?
- Is fabrication done in-house? Can I see real finished projects?
Compare costs in the price guide and the trade-offs in disadvantages of aluminium kitchen cabinets. Heavy appliances? Read how much weight aluminium cabinets can hold.
Frequently Asked Questions
The carcass is the structural box of a kitchen cabinet: the sides, base, top, back and shelves that carry the doors, drawers and appliances.
A honeycomb-reinforced aluminium carcass with welded joints is waterproof, termite-proof and rigid, so it handles humidity, steam and heavy use.
Doors can be changed later, but the carcass holds everything together. A weak carcass flexes, loosens and shortens the life of the whole kitchen.
Welded joints stay rigid under daily use, while screwed or clipped joints can loosen over time.