Re: Adding a vent rib? Posted by Tom Salzer on November 26, 2008, 9:52 pm, in reply to "Re: Adding a vent rib?" 65.96.238.1 Thanks, I contacted Simmons. The cost of adding a vent rib is $600.00. It's going to be a tough decision. Message Thread: Adding a vent rib? - Tom Salzer November 23, 2008, 9:58 am Re: Adding a vent rib? - revdocdrew November 23, 2008, 2:15 pm Re: Adding a vent rib? - Tom Salzer November 26, 2008, 9:52 pm Re: Adding a vent rib? - bill schodlatz November 23, 2008, 7:02 pm