• Premier Building Material Sdn. Bhd.
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PBM VB 70.05 ventilation block

VB 70.05

Product Info

Dimensions (L x H x D)

190

x

190

x

70

mm

Unit Weight

± 3 kg / pc

Coverage

25 pcs / m²

Packaging

380 pcs / pallet

Opening Area (per unit)

9100 mm²

Opening Percentage

25.2 %
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Project References —

Product Description —

VB 70.05 is a compact square ventilation block intended for paired installation, where two units are combined to form directional airflow patterns. The recessed opening creates depth and shadow within a dense layout, making it suitable for residential screens, staircases, and secondary façades with controlled ventilation requirements.

Privacy Level

Medium | ●●●○○

Application

Boundary & perimeter walls, Feature & screen walls, Service yards & plant rooms, Staircases & semi-open enclosures, Including fire escape / Bomba staircases

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 —

VB70.05A ventilation block

VB 70.05A

VB 70.01

VB 70.100 ventilation block dimension

VB 70.100

VB 70.140 ventilation block dimension

VB 70.140

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.