Glass · Sheet sizes
Half glass sheet: 2550 × 1605 mm
A half sheet of glass is 2550 × 1605 mm, 4.09 m². It weighs 40.9 kg at 4 mm, 61.4 kg at 6 mm and 102.3 kg at 10 mm. Float glass weighs 2.5 kg per m² per millimetre of thickness (2500 kg/m³, EN 572-1), and toughened glass weighs the same. The half sheet, 2550 by 1605 mm, is one of the sizes a merchant cuts from the float line's jumbo (6000 by 3210): first to DLF at 3210 by 2250, then to half at 2550 by 1605 and quarter at 1605 by 1275.
Weight by thickness
| Thickness | kg/m² | kg per sheet | Handling (the weight calculator's guideline) |
|---|---|---|---|
| 3 mm | 7.5 | 30.7 | Two people, by the guideline |
| 4 mm | 10.0 | 40.9 | Two people, by the guideline |
| 5 mm | 12.5 | 51.2 | Three or four people, or a lifter |
| 6 mm | 15.0 | 61.4 | Three or four people, or a lifter |
| 8 mm | 20.0 | 81.9 | Three or four people, or a lifter |
| 10 mm | 25.0 | 102.3 | Mechanical lifter |
| 12 mm | 30.0 | 122.8 | Mechanical lifter |
| 15 mm | 37.5 | 153.5 | Mechanical lifter |
| 19 mm | 47.5 | 194.4 | Mechanical lifter |
| 25 mm | 62.5 | 255.8 | Mechanical lifter |
Figures from the glass weight calculator: area × thickness × 2.5 kg per m² per mm. Laminated glass and double glazing are there too.
How many panes one sheet gives
| Pane | Per sheet | Of the sheet's area | Cutting plan |
|---|---|---|---|
| Door panel 900 × 2100 | 1 | 46.2 % | Open in the optimiser |
| Shower screen 900 × 1900 | 1 | 41.8 % | Open in the optimiser |
| Window 1200 × 1200 | 2 | 70.4 % | Open in the optimiser |
| Pane 1000 × 1000 (1 m²) | 2 | 48.9 % | Open in the optimiser |
| Pane 600 × 900 | 6 | 79.2 % | Open in the optimiser |
| Pane 500 × 500 | 15 | 91.6 % | Open in the optimiser |
Counted by the optimiser's own packer with its defaults: 10 mm edge trim per side, 4 mm breakout between cuts, rotation allowed, three-stage guillotine cuts. Each link opens the optimiser with that sheet and that order loaded, so you see the same count drawn. A real order mixes sizes: paste yours.
Before you order to this size
Sizes move a little between manufacturers: confirm the sheet with your merchant before you cut to a plan. The glass reference has the four sizes with the cutting allowances.
Other stock sizes: Jumbo / PLF 6000 × 3210 · DLF 3210 × 2250 · Quarter 1605 × 1275 · all four
Questions people ask
- What size is a half sheet of glass?
- 2550 × 1605 mm, which is 4.09 m². The half sheet, 2550 by 1605 mm, is one of the sizes a merchant cuts from the float line's jumbo (6000 by 3210): first to DLF at 3210 by 2250, then to half at 2550 by 1605 and quarter at 1605 by 1275. Sizes move a little between manufacturers.
- How much does a half sheet of glass weigh?
- 40.9 kg at 4 mm, 61.4 kg at 6 mm, 81.9 kg at 8 mm and 102.3 kg at 10 mm: float glass weighs 2.5 kg per m² per millimetre (2500 kg/m³, EN 572-1), and toughened glass weighs the same.
- How many 1200 × 1200 panes come out of a half sheet of glass?
- 2, as the optimiser lays them out with 10 mm edge trim per side and 4 mm breakout: 70.4 % of the sheet's area.