Deluxe Option: 6-D  
Recommended Flow 92LPM @ 30mJ/cm2 - Peak Flow 174LPM @ 16mJ/cm2
GW GAUV-15S 
3 x 20BWH 
1 x 20BPF20 
1 x 20BRFGAC
1 x 20BPX01 
Plus Surge Protector

All options exceed domestic peak flow requirements

Based on average peak domestic flow allow 15LPM per shower plus 10LPM for auxiliary such as dish washer or washing machine