Bought this box awhile ago for my 2 10" Skar Sdr as it had the right airspace for each sub. Box was shipped in lots of protection, straight out of the box It didnt smell like any chemicals or have a funky smell like a lot of prefab boxes do.( Box is set in the back seat literally 2-3ft away from driver and passenger seats. Subs at full tilt, still no chemical smell)As far as prefab boxes go, the front baffle is thick and well supported. Box is on the heavy side but that goes hand in hand with a sturdy box. I have had this box for about 5 months now and still haven't found any issues with the box.