Install mortar bed, Install mortar guard, Install brackets – Sioux Chief Linear Shower Drain - StreamLine - Full Mortar Bed User Manual
Page 12: Install foam block

17. Install Mortar Bed
Follow industry standards to install mortar bed flush to
top of Mortar Guard 1-1/4" thick. Pack mortar into top
and bottom of T-Channels to lock Mortar Guard in place.
Be certain to maintain uniform thickness within entire
bed. Allow to dry before proceeding.
16. Install Mortar Guard
Install Mortar Guard over Foam Block and Brackets.
Center end to end over Clamping Collar. Fully seat
Mortar Guard to Clamping Collar on Drain Base.
14. Install Brackets
Align holes in Bracket with second set of holes in from end
of drain base. Attach using two 1/2" screws. Repeat for
opposite end of drain base. Do not over-tighten screws.
15. Install Foam Block
Lay Foam Block in brackets and align ends of foam with
inside edge of Clamping Collar.
Bracket
1/2" Screws
Mortar Guard
Foam Block
Foam Block
Clamping Collar
Align
Full Mortar
Bed
T-Channel
1-1/4" thick
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Installation Guide