Hi, Shower Upgrader!
Thank you for your question. The difference for the two units is that the R100000-UNBX has a bottom port for a tub spout installation and the R10000-UNBXHF does not include a bottom port for a tub spout installation. Both units can be used with the R11000 diverter rough. The flow rate is determined when the trim kit is selected. For further assistance with this, please contact our Delta Customer Service line at (800)345-3358. We are available Monday-Friday, 7am-7pm, CST and Saturday, 8am-5pm, CST. You may also email at email@example.com.
Date published: 2018-08-08