The product was come broken! It has a bad deck construction(The material of deck is polyethylene or polypropylene) it glued with sealant - synthethic rubber or same! This material has no good adhesy with deck material. It can be used only as prephabricate(you need to make yourself from aluminium or steel shard or use plate from stock filter+polyurethane sealant like Soudal P40 or same) This price is to big for this quality ! In other hand this is good piece of foam that can easy convert to great filter - you need do same job!