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Belki stropowe Porotherm
| Długość belek (cm) | Wymiary l/b/h (mm) | mb/m2 62.5 cm | mb/m2 50 cm |
| 175 | 175/16/17.5 | 1.6 | 2.0 |
| 200 | 200/16/17.5 | 1.6 | 2.0 |
| 225 | 225/16/17.5 | 1.6 | 2.0 |
| 250 | 250/16/17.5 | 1.6 | 2.0 |
| 275 | 275/16/17.5 | 1.6 | 2.0 |
| 300 | 300/16/17.5 | 1.6 | 2.0 |
| 325 | 325/16/17.5 | 1.6 | 2.0 |
| 350 | 350/16/17.5 | 1.6 | 2.0 |
| 375 | 375/16/17.5 | 1.6 | 2.0 |
| 400 | 400/16/17.5 | 1.6 | 2.0 |
| 425 | 425/16/17.5 | 1.6 | 2.0 |
| 450 | 450/16/17.5 | 1.6 | 2.0 |
| 475 | 475/16/17.5 | 1.6 | 2.0 |
| 500 | 500/16/17.5 | 1.6 | 2.0 |
| 525 | 525/16/17.5 | 1.6 | 2.0 |
| 550 | 550/16/17.5 | 1.6 | 2.0 |
| 575 | 575/16/17.5 | 1.6 | 2.0 |
| 600 | 600/16/17.5 | 1.6 | 2.0 |
| 625 | 625/16/17.5 | 1.6 | 2.0 |
| 650 | 650/16/23 | 1.6 | 2.0 |
| 675 | 675/16/23 | 1.6 | 2.0 |
| 700 | 700/16/23 | 1.6 | 2.0 |
| 725 | 725/16/23 | 1.6 | 2.0 |
| 750 | 750/16/23 | 1.6 | 2.0 |
| 775 | 775/16/23 | 1.6 | 2.0 |
| 800 | 800/16/23 | 1.6 | 2.0 |
| 825 | 825/16/23 | 1.6 | 2.0 |
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