Grilles sold separately.
Rectangular Double Airbrick Adaptor is manufactured from High Impact Polystyrene.
It has a female adaptor.
Fully compliant with SAP Appendix Q Product Characteristics Database recommendations for duct sizes used with both extract and Mechanical Heat Recovery Systems.
Manufactured in compliance with Domestic Plastic Ductwork Specification DW/154 and does meet UL94HB flammability standard.
philip richards (verified owner) –
This is the second time I have sourced products from I-sells. They are competitively priced and the goods arrive in good time. No issues to report so will definitely use them again.