• Premier Building Material Sdn. Bhd.
  • 03 3264 8080
  • sales@pbm.my

VB 402.125

Product Info

Dimensions (L x H x D)

300

x

300

x

125

mm

Unit Weight

± 12.5 kg / pc

Coverage

10.4 pcs / m²

Packaging

81 pcs / pallet

Opening Area (per unit)

40000 mm²

Opening Percentage

44.4 %
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Project References —

Product Description —

VB 402.125 is a four-opening vent block with a balanced grid layout that delivers consistent airflow and visual rhythm. Its clean proportions make it ideal for façades, staircases, and large-scale ventilation walls.

Privacy Level

Medium | ●●●○○

Application

Service yards & plant rooms, Staircases & semi-open enclosures, Ventilated façade systems, Semi-outdoor corridors & walkways

Key Characteristics

  • Non-load-bearing concrete unit
  • Modular sizing for fast installation
  • Suitable for indoor & outdoor use
  • Enhanced natural ventilation

Downloads —

CAD drawings and technical documents for specification use.

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Related Products —

VB 412.125

VB 225.125

VB 604.125

VB 608.150

Alternative Options —

Terracotta-painted VB+ 804 concrete blocks used in a restaurant interior with black-framed stair and patterned tiles

VB+

Dual-face premium ventilation block

VBB

Premium single-face ventilation block with refined finish

Technical Notes —

Important information on finish, tolerances, and natural concrete characteristics.

  • Fair-faced concrete products may exhibit slight tonal variation due to raw materials and curing conditions.

  • Subtle surface texture variations are natural characteristics of concrete manufacturing.

  • For best visual consistency, it is recommended to mix blocks from multiple pallets during installation.

  • Certain large-format VentBlock models are produced by joining two precast units manually.
    As a result, a visible joint line may be present at the centre of the block.
    This is a normal characteristic of the manufacturing process and does not affect structural performance or ventilation function. Due to the handcrafted assembly process, minor alignment variations at the joint may occur.

  • Efflorescence (white deposits) can occur naturally when moisture draws soluble salts to the surface of concrete.

  • It is typically temporary and may reduce over time with weathering.

  • Avoid excessive water during installation and ensure proper drainage to reduce risk.

  • Manufactured to MS 2282-3:2010 (non-load-bearing concrete blocks), where applicable.
  • Typical dimensional tolerances fall under Category D1: Thickness/Height/Length: +3 mm /-5 mm
  • Site verification and mock-up approval are recommended prior to full installation.

  • Install on a level base with consistent joint thickness for a uniform appearance.

  • Suitable workmanship and appropriate mortar selection are recommended for fair-faced applications.

  • For external use, ensure appropriate detailing for water run-off and ventilation.

  • Where required, the application of a suitable water repellent, sealer, or paint may be considered to help reduce moisture absorption and the growth of algae or fungi.

  • Ventilation blocks are non-load-bearing elements and must be supported by appropriate structural framing or lintels.