The Pioneer ADTVA133 Double Din Installation Kit includes a cage brackets and trim ring. You can mount the Pioneer GPS system or in-dash AV receiver using the Pioneer ADT-VA133 Mounting Bracket. The cage of the double din installation kit holds the system very securely without any hassles while the trim covers up everything giving a neat look. The Pioneer ADT-VA133 Car Stereo Installation Kit fits double 2 din size units and is designed for demo boards and vehicle applications. Easy to install the ADTVA133 kit is used with Pioneer AVIC-Z2 AVIC-Z1 and AVIC-D3 Navigation Systems and AVH-P6800DVD and FH-4200MP Receivers.