O-TEC blocks are recognisable by the vertical circular openings through the block. They are specialist form blocks selected to suit the project detail rather than used as a standard wall block.
Dimensions & technical data
| Available sizes | 600 × 250 × 200 / 250 / 300 mm |
| Density | 350 kg/m³ |
| Core diameter | 200: Ø120 · 250: Ø150 · 300: Ø150 mm |
| Units / pallet | 200 mm: 40 · 250 mm: 32 · 300 mm: 24 |
| Technical document | O-TEC dimension drawing |
| Structural design | Reinforcement and concrete are project-specific |
Full-pallet quantities shown above are the current BAUBLOCK pack quantities. You can order by unit or pallet, with collection or delivery arranged to suit the order.

BAUBLOCK O-TEC — manufacturer dimensions
Open full-size drawing →Official BAUBLOCK O-TEC geometry for the available widths; available products are 200, 250 and 300 mm.

Where It Fits
O-TEC is intended for project-specific reinforced details where a formed vertical opening is required while retaining the BAUBLOCK AAC construction system. Select the appropriate size and detail from the applicable BAUBLOCK technical documentation and project design.
Installation Considerations
Reinforcement, concrete infill, bearing and structural capacity are project-specific. Follow the applicable BAUBLOCK technical documentation and the project engineer or architect details.
