Metal bed
Miami Metal Bed Frame in Black, Grey, Ivory or Pebble
From£199
6 4ft6 metal frames, every one measured outside-in

Metal bed frames in UK double, 135 x 190 cm. Powder coated steel, bolted joints, base included with every frame.
A metal frame is the lightest and least expensive way to get a double bed that lasts: from about 35 kg against 50 to 70 kg for solid wood, and about 143 to 147 cm wide assembled, which is narrower than a padded frame of the same size. Nothing warps, splits or marks.
Every frame here publishes its assembled outside dimensions, not just the mattress size. Compare with all double bed frames or the same frames in 5ft under king size metal bed frames.
| Mattress | 135 x 190 cm4ft6 x 6ft3 |
|---|---|
| Frame outside | about 145 x 198 cmtypical |
| Weight | from 35 kgthe lightest frames we sell |
| From | £269frame only, delivered |
Metal bed
From£199
Metal bed
From£249
Metal bed
From£299
Metal bed
From£229
Metal bed
From£219
The numbers
A UK double mattress is 135 x 190 cm. A metal frame adds less around it than a wooden or upholstered one, because the tube is thin: expect about 143 to 147 cm wide against 145 to 150 cm for a padded frame.
| Size | Mattress | Frame outside (typical) | Minimum room |
|---|---|---|---|
| Small double | 120 x 190 cm126 x 198 cm | 250 x 300 cm | |
| Double | 135 x 190 cm143 to 147 x 198 cm | 265 x 300 cm | |
| King size | 150 x 200 cm160 x 208 cm | 280 x 310 cm |
Each product page gives the exact assembled size for that frame. Compare with all double bed frames, or see the double bed size guide.
Why metal
Metal frames are the lightest and the cheapest way to get a double bed that lasts. A powder coated steel frame weighs from about 35 kg against 50 to 70 kg for solid wood, which matters when it has to go up a stairwell. There is nothing to swell, warp or split, and the finish does not mark.
The honest downside is noise. Metal joints work loose over time and that is where squeaking comes from, not the slats. Bolts want checking once or twice in the first year, and once a year after that. Wooden and upholstered frames are quieter from the start.
Budget
Our own prices, frame only, delivered. The mattress is not included.
Logistics
Frames arrive flat-packed in 2 to 3 boxes (30 to 60 kg in total). Two people assemble a king size bed frame in 45 to 90 minutes with the tools in the box.
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Email hello@king-size-bed.co.uk and a person replies within one working day.
Questions
It takes a UK double mattress, 135 x 190 cm. The frame itself measures about 143 to 147 cm wide by 198 cm long, which is narrower than a padded frame of the same size because the tube takes up less room than upholstery.
They can, and the cause is almost always the bolted joints working loose rather than the slats. Tightening every bolt once or twice in the first year, then annually, stops it. A wooden or upholstered frame is quieter from new.
Yes. The limit is rarely the metal, it is the base. Every frame here comes with its slatted base included, and the weight rating is published on the product page where the manufacturer states one. Where they do not state one, we say so rather than guess.
Considerably. A metal double frame starts around 35 kg against 50 to 70 kg for solid wood. That is the difference between two people carrying it upstairs comfortably and not.
No, the base is part of the frame. Every metal frame here has a sprung or solid slatted base included, so you buy the frame and the mattress and nothing else.
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