I am building a 5 cu ft slot ported box for 2 12's. I have almost completely designed it so i just want to check and make sure i have desided on the right materials. I am planning on using 1'' MDF is this an appropriate thickness. I am going to be putting 2 12'' type r's in the box. also the box is not ver deep so there arent going to be any large panels so i wouldn't think there would be much danger for the box flexing. I am planning on using 2.5 inch coarse thread sheetrock screws. i know these are the type of screws to use but is that a good lenght? I am planning on using spiked "t" nuts with the matching bolts to attach the subs. what do most people use when attaching their subs? for sealing the sub in i am thinking of purchasing some speaker sealing caulk from parts express. it is sold in 36in lengths for only $1 each. is this a good choice for sealing? this is my first system and i am a perfectionist so i want to do it right. thanks for your help!