Water Distribution Tray For Whole House Humidifiers.  This is the tray that distributes water evenly to the water panel evaporator pad below.  Same as Aprilaire # 4331

For use with these Models:

Bryant:
HUMBBSBP2412-A27
HUMBBLBP2417-A24

Carrier:
HUMCCSBP2412-A27
HUMCCLBP2417-A24

Totaline:
P110SPB2412
P110LPB2417

ICP: 
HMICSB12B
HMICLB17B

Lennox:
HCWB3-12
HCWB3-17
HCWB3-12A
HCWB3-17A

Trane:
THUMD200ABM00BA
THUMD300ABA00BA

American Standard:
AHUMD200ABM00BA
AHUMD300ABA00BA

Nordyne:
9178970
9178630

Maytag:
9181270
9181280

York:
S1-BP5000MY
S1-BP6000MY

Coleman:
S1-BP5000MC
S1-BP6000MC

Luxaire:
S1-BP5000ML
S1-BP6000ML