NBS Source

Description

A thermally broken thermoplastic 'over-the-frame' ventilator, designed for fitting on top of any window frame.

Features:

  • Extruded from high quality PVC-U with a high structural strength, offering a superior U-value.
  • The integrated seal assures a tight seal when closed, providing superior weathertightness.
  • The ventilator has an expandable base with co-extruded seal, adjustable for profiles from 57–72 mm.
  • Inner tip provides upward air deflection.
  • Designed to cope with existing plaster lines for refurbishment applications and newbuild plaster lines.
  • Easy to assemble and install, and can be simply screwed into any cavity closer.
  • The flap can be fully opened, allowing quick and simple cleaning.

General information

Uniclass

Pr_30_59_57_58 Overhead ventilatorsPrimary

CAWS

L10/10 Wood windows

L10/15 Wood windows

L10/210 Wood windows

L10/260 Wood windows

L10/30 PVC-U windows

L10/31 PVC-U windows

L10/33 Proprietary windows

L10/330 Aluminium windows

L10/350 PVC-U windows

L10/360 PVC-U windows

L10/380 PVC-U windows

L10/390 Proprietary windows

L10/400 Composite windows

L10/410 Composite windows

L20/250 Wood-panelled doors

Specification data - Overhead ventilators Enhanced data

Standard product features

Airflow:

  • At 1 Pa: 37 m³/h/m.
  • At 2 Pa: 50 m³/h/m.
  • Equivalent area (at 1 Pa/m vent): 12495 mm²/m.

Width:

146 mm.

Vent height:

35 mm.

Product Options

Control:

  • Cord, hand or rod control.
  • Can be turned into a permanent ventilator to suit British Gas requirements for gas and domestic fuel burning appliances.

Free air performance:

Ventilation capacity can be set to specific rates, up to a maximum of 15,000 m² per metre.

Accessories:

  • Head extension designed for thick plaster reveals in refurbishment applications.
  • Plaster finishing profile can be clipped to the vent-body for newbuild applications.
  • Side cap extensions designed for thick plaster reveals in refurbishment applications.

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