there the sterilite ones no chance of that way to firm luckily, this weekend I will attempt to build it then Im just worried about heat and feeding will not be as fun without the sliding tubs, Ive been an apprentice i guess for quite some time with a buddy of mine and my rack will hold more then his but its smaller and he is 100% anti lid method and his only reason is because it's easier feeding but i was wondering if there is any other problems lol.