JBL CSS8018 Commercial Series 8", 20 Watt Ceiling Speaker

okay so I have here these in-ceiling speakers that I want to install today let's see so JBL LS 328 C and I'm opening up here the package and inside you will find here these cardboard cutout so give this template that shows you how big the hole needs to be in order to install the speaker and the ceiling you can see this here fits right and you can use this here to a mark the spot where you want to cut the hole into the ceiling this is really helpful but in my case above the ceiling is actually an attic so I have direct access here from on top and so I have built here this little frame that you can see here but this piece of plywood and then a couple of one buys and I've cut the same size hole into this piece of plywood and that will help me do a secured of the speaker a lot better later on I'm just I don't want to hang the speaker on to the drywall I actually use this piece of plywood to