The 3801 Series is distinguished by its concealed snap-flange mounting system: a stainless steel flange is continuously heliarc-welded to the tubing

They are a hygienic choice

MBLK require

Electronic Control — Infrared sensor automatically turns dryer on when hands are held under air-outlet opening and across path of sensor

and antiseptic solutions (10–15%)

Zurn Z.L5.M Zurn One Manual Hand Washing System, 20” x 18” Wall Hung Lavatory with 0.5 GPM, Centerset, Gooseneck Faucet," and Wrist Handles Operation-Faucet Handles The 3801 Series is distinguishedZurn One Manual Hand Washing System, 20 x 18 Wall Hung Lavatory with 0. 5 GPM, Centerset, Gooseneck Faucet," and Wrist Handles