| |  | Slabs |
| | Type | Thickness s
| Minimum diagonal d
| Weight
| | Normal | 2 - 5 cm
| 20 - 10 cm
| 85 kg/mq
| Thin
| 1 - 3,5 cm
| 20 - 10 cm
| 60 - 70 kg/mq
| | Giant | 3 - 7 cm
| 40 - 25 cm
| 100 kg/mq
| Thin giant
| 2 - 5 cm
| 40 - 25 cm
| 70 - 80 kg/mq
| | | Slabs (opus incertum) irregular slabs or "opus incertum mosaic" represents the largest quantity of porphyry supplied. This material can be used in many ways, is easy to lay and offers interesting aesthetic results at limited cost. THESE SLABS ARE WELL SUITED FOR PAVING SQUARES, COURTYARDS, WALKWAYS, FOOTWAYS, AVENUES AND LANES.
| Characteristics | The upper face of the slabs is natural quarry plane, the edges irregular..
| Packing | Slabs are palletised
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