Kitchen cabinet sizes

[Argyll]

I'm toying with the idea of making my own kitchen cabinets out of either 15 or 18mm MDF. I dislike most of the kitchen cabinets made with chipboard. I'm designing my own cabinets in Sketchup and copying cabinet measurements from B&Q's website.

The dimensions of the kitchen cabinet shown in B&Q are:

Product width 1000mm
Product thickness 18mm
Product height 870mm
Product depth 570mm
Service void 65mm
Product code 3663602637479

The first question is does the height specifications take into account the plastic feet?

Secondly, the depth including the void is 635mm but there's no indication this includes the doors. The worktops on sale at B&Q are 620mm. The next step up on depth is 900mm. If the cabinet is 635mm and the doors are around 20mm thick this would mean the full depth of the cabinet is 655mm which would mean the 620mm worktop would underhang by 35mm which would look terrible.

Or are is the measurement of 570mm already including the 65mm service area so the non-service area is 505mm? I'm guessing this must be the case but I don't want to design the cabinet and discover I need to change the dimensions afterwards.

I've contacted B&Q by their internal messaging system and waiting on a reply.

I'd thought I'd ask on here for a quick answer.

https://www.diy.com/departments/goodhom ... oreId=1119

[dewaltdisney]

I have to say that when you cost it out the material cost, making up and painting is far more than the unit price. I did this once for an awkward corner in a kitchen to fit the door. I made it out of MFC though as I could not face the painting, and it was difficult and cumbersome to work with as it was a tall unit. The original cabinet got messed up trying to adjust it to fit, it was awful. The cabinet was made to the existing door size which is the key.

DWD

[Argyll]

I know it will cost more DWD but I detest chipboard. I'll need to design it anyway to fit my kitchen plan. I may well end up buying it from one of the box stores. I just want to know the dimensions first. I guess the depth they state of 570mm must include the service area otherwise it wouldn't make sense.

[dewaltdisney]

Yes, it is the cabinet side that determines the depth, the service void steps back in from the back edge. I think the height includes the feet which are really only meant to level out the floor to worktop line.

DWD

[arco_iris]

You need a little more experience to realise how kitchen units work!

First question, answer: 870mm includes the adjustable feet (which can be bought separately) which are usually reckoned to be 150mm. Actual carcase heights (and door heights) are 720mm, doors in practice are 715/718. The basis for this is 150mm plinth, 720mm carcase, 40mm laminate worktop equals 910mm working height. In practice, to avoid having to cut ready-made plinth boards, you set the feet at 155mm, w/height 915mm, off the finished floor surface.

Second question, answer: a standard base unit carcase measures 570mm deep, then there's 18 or 20mm for the door making 590mm - a 600mm laminate worktop then overhangs 10mm at the front (30mm with the door open).

The service void of 65mm is the distance between the back edge of the carcase (570mm) and the cupboard back inside (500mm), allowing for a 5mm thick back board. If you don't need a service void, don't construct one and your unit will be 570mm deep inside.

OK?

[Argyll]

First question, answer: 870mm includes the adjustable feet (which can be bought separately) which are usually reckoned to be 150mm. Actual carcase heights (and door heights) are 720mm, doors in practice are 715/718. The basis for this is 150mm plinth, 720mm carcase, 40mm laminate worktop equals 910mm working height. In practice, to avoid having to cut ready-made plinth boards, you set the feet at 155mm, w/height 915mm, off the finished floor surface.

As already mentioned I suspected this but the description didn't state this

Second question, answer: a standard base unit carcase measures 570mm deep, then there's 18 or 20mm for the door making 590mm - a 600mm laminate worktop then overhangs 10mm at the front (30mm with the door open).

Worktops are 620mm

The service void of 65mm is the distance between the back edge of the carcase (570mm) and the cupboard back inside (500mm), allowing for a 5mm thick back board. If you don't need a service void, don't construct one and your unit will be 570mm deep inside.

I just wanted clarification that the service void included the 570mm because it doesn't make that clear in the description. I know you can buy worktops deeper than 620mm.

[arco_iris]

Well..... having ascertained what w/top overhang you want, construct the carcases accordingly - the sizes I gave are common-or-garden bog standard. If you were using 570mm deep carcases & wanted 15mm o/hang, then the base units would be spaced away from the wall with a batten (you can in fact get adjustable spacer fixings).

Consider, though, that manufacturers have invested millions in machinery, technology and design, let alone engineering calculations, so that a range fits together seamlessly - you can't replicate all that yourself.

Only the lower priced units still use chipboard main construction - though even the higher end uses some chipboard components. For example, some budget ranges use 3mm single face hardboard cupboard backs - DIYK I know for a fact uses 8mm particle board faced both sides.

[big-all]

the easiest way to remember it is imperial its a 2ft wide [ 610mm]worktop 3 ft [915mm]to top surface
now off course many variations around it but all around the same

[Argyll]

For reasons I don't really want to go into I wanted to create a cabinet with the exact same dimensions as the B&Q one so just needed clarification. In my head I was 97% correct but as you know some manufacturers have some weird specs. For example, Ikea doesn't provide service areas at the back or at least never used to. That left me with a lot of work to do a couple of years ago and wouldn't be caught out again with that. I've never fitted a B&Q kitchen, with no intention to do so.

Thanks for the clarification though