Product review (5 stars): EcoAqua EFF-6027A Replacement for DA29-00020B, 2-Pack
I purchased this item for a customer, she needed the DA29-00020A as her ice maker had stopped producing.  Discovered that she's only gone 19 months on the original cartridge!!.  My online research said the "B" should work.  Shipment was more than quick. The replacement unit installs per Samsung instructions without any problem.  Given this pricing after shipping and tax on two units, was a little more than that for one replacement from the local "L---'s" this was a good deal.  I could not get the customers unit to flush, but I found that if I took the cartridge out, then put it back in it filled after about 3 cycles.  I put some paper towels in the ice bin, and had the customer throw that Ice away the next morning (it was a shade of grey).  Has worked fine since then.