Bat interstone – 28 mm

7,20

IB VL 19 Front 20 mm – Sustainable attachment for the IB VL 19 bat nesting box, ideal for HSB façades, new construction and renovation. Made of weather‑resistant Woodstone®, raises the box for optimal fitting and integration, suitable for various bat species and creates a safe summer, mating and winter residence.

Available by pre-order - Delivered between 26/05/2026 - 31/05/2026

Description

IB VL 19 Front 20 mm | Mounting piece for Bat Built‑in Box HSB façades

The IB VL 19 Front 20 mm is a durable mounting piece specially designed for the IB VL 19 vleermuisinbouwkast, ideal for facades with cladding such as HSB (timber frame construction).

The front provides a raised placement and a optimal connection to the façade, so that the built‑in box seamlessly integrates in various construction situations. It is made from sustainable Woodstone®, resistant to all weather influences, and easy to install.

In addition to this 20 mm variant there is also a 28 mm front available (reference 72006). Choose the correct thickness based on the applied façade cladding for a perfect integration of the entrance opening.

Key features

  • Adapter for IB VL 19 built-in box
  • For facades with HSB or other cladding
  • 20 mm thick, also available in 28 mm
  • Elevates the built-in box for optimal fitting
  • Made of sustainable Woodstone®
  • Simple installation, weather-resistant
  • Improves integration and aesthetics of the façade

Suitable for various bat species

The IB VL 19 Front 20 mm, in combination with the IB VL 19 built‑in box, is used by various bat species depending on location, application and season:

Mating roost

  • Common pipistrelle (Pipistrellus pipistrellus)
  • Nathusius' pipistrelle (Pipistrellus nathusii)
  • Small dwarf bat (Pipistrellus pygmaeus)

Summer roost

  • Common pipistrelle (Pipistrellus pipistrellus)
  • Nathusius' pipistrelle (Pipistrellus nathusii)
  • Small dwarf bat (Pipistrellus pygmaeus)
  • Possibly also late‑summer bat (Eptesicus serotinus) and whiskered bat (Myotis mystacinus) in combination with an overlying façade box

Maternity roost

  • Suitable for maternity roost sites of common pipistrelle, Nathusius' pipistrelle and soprano pipistrelle
  • In combination with overlying façade boxes possibly suitable for small maternity groups of late‑summer bats
  • Multiple linked boxes create a spacious and varied living space

Winter roost

  • Mild winters (no frost): common dwarf bat, rugged dwarf bat, small dwarf bat
  • Harsh frost: in combination with insulated façade boxes suitable for common dwarf bat, rugged dwarf bat and small dwarf bat

Application

  • Increases and integrates the IB VL 19 built-in box seamlessly into façades
  • Creates optimal access for bats
  • Together with linked boxes and overlying façade boxes a safe roost and winter residence
  • Ideal for new construction, renovation and HSB façades

Additional information

Species

Various bats

Manufacturing

Breathing concrete wood

Dimensions

28 x 12,5 x 2 cm

Weight

0.7 kg