Thanks man. The led are in a void 40mm below the top with 13x 16 mm holes at the sides with mdf baffles directing the flow. Over the drivers and sinks. This is totally sealed from the grow room so needs no filter. To the left of the grow area there is a 80mm void with a wall around 230mm long and 60mm wide full of carbon out of a damaged phresh filter I bought cheap. I'm a joiner and heating engineer so I Can make a cab fairly easy and the carbon is so simple and works amazing. This took ages and it is extremely good but I complicated it massively I started a new one today and I expect it to be way better and take less than a quarter of the time. Not as stealthy because its a huge speaker but wouldn't look out of place in a bachelor pad etc. Work is tight round here lately and rather than sit about I'm trying to make this crack as a business. I'm a qualified teacher /heating engineer/gas fitter /advamced craft joiner qualifications in it and a fair few more aswell I'm still struggling to find work so God help the ones with no qualifications. I'm not one for sitting about so tried to think of a new business and I have knowledge in every aspect of n building furniture grow cabs heating and venting lighting spectrums and electrics so after been told for years I make the best cabs ever it's took me till now to realise there's a huge market for it.