Free Air - Without Baffle: 40cm² Single brick set
BM430 White internal Terracotta external
Rated Input Max 15kW (51,000 Btu/h)
Size: 216 x 76mm
Expands to fit solid or cavity walls 250 to 343mm
Comprises: Louvred terracotta airbrick, black plastic two-part cavity liner with white louvred internal ventilator