Aluminium door relief grilles are ideal to circulate air between rooms to equalise pressure. They have full chevron blades and come in 2 sections that clip together – no screwing necessary. There are 2 key measurements – the size of the face and the size of the cut-out. The cut-out size is listed in the main product description. BrochureDownloadTechnical Data SheetDownloadInstallation InstructionsDownload
