I received a hand me down DW705 with a busted dust collection bag from a friend.  After reading all the negative reviews on amazon, I was a bit hesitant to purchase this replacement, but did go ahead nevertheless.  First, the bag fits perfectly, is the same size and design than the original one and even has DeWalt written in big yellow letters all over it (not shown on picture).  After working with my new old miter saw for a day, I looked into the bag and it was full of saw dust.  Maybe half of the dust was not collected, but that still means that half was and for me that is better than having no a bag at all.  Let's be clear, the bag simply collects the dust that is "thrown" its way by the saw as it cuts through the wood. If not all the dust is collected, it is because of this a passive collection method and NOT a feature of this specific replacement part.  When cutting pressure treated wood, the intake of the bag can occasionally get clogged with the moist sawdust.  Overall, I am very happy.