Tannoy PMK 5 IW Pre-Mount Kit For PCI 5DC IW In-Wall LoudspeakersThe PMK 5 IW pre construction bracket is designed for Tannoy the PCI 5DC IW in wall speaker. The pre construction bracket is used during framing and before applying sheetrock to mark out the speaker location for easy installation. The PMK 5 IW is simply attached to the wall joists before the drywall is installed. This ensures precise speaker placement and helps make your installation go smoother. The bracket uses adjustable metal wings that will span