I have a used SWC cone skimmer. The pump sometimes has intermittent start issues. Basically, if you can fix the pump, then this is a great deal for you. If not, I'm just looking to get a little money for the skimmer body, and you just need to get a new pump for it (still a good deal ) The exact measurements are 25.75" x 13" x 20". It uses 3/16th acrylic. Comes with collection cup drain lines, and various extra O-rings.
$60 OBO for the skimmer/pump
The waste collector by My Reef Creations (MRC) and measures 17" (including vent) x 7". Like all MRC stuff, this thing is solidly built! Comes with extra vent O-ring. The vent also has an auto shutoff so the unit can't overflow. $60 OBO for the collector.