Skip to content
Appointments are recommended at all KOHLER Stores—get expert help without the wait!
Appointments are recommended

KOHLER K-33425 36" extension kit for 2-1/2" linear drain channel

SKU K-33425-NA
Original price $395.50
Original price $395.50 - Original price $395.50
Original price $395.50
Current price $296.62
$296.62 - $296.62
Current price $296.62
Availability:
in stock, ready to be shipped

KOHLER linear drains bring a modern look to any shower they're installed in, and this KOHLER 36" extension kit for the 2-1/2" linear drain channel will allow your drain to go the distance in larger showers. This kit includes a 36" channel with adjustable subfloor brackets, allowing you to extend your existing linear shower drain channel from 60" to 96" long. This product is intended to be installed with select linear shower drains.


  • Extends drain channel length by up to 36", from 60" to 96", for precise wall-to-wall installation
  • Increases the standard drain's flow capacity from 15 gpm (56.8 lpm) to 30 gpm (113.4 lpm). Rate may vary by installation
  • Drain outlet location can be adjusted to bypass joints, venting, or other in-floor obstacles
  • Outlet adapter can be preattached to drain pipe for simplified installation and access to couplings
  • Easy-clean domed hair strainer prevents clogs
  • Subfloor brackets are height-adjustable to ensure the drain channel is mounted at the correct height during installation
  • Wide-top flange with protective film ensures excellent waterproof adhesion
  • Can also be installed with KOHLER side-outlet adapter K-28987 (sold separately)
  • Requires at least two Kohler 2-1/2" x 36", 2-1/2" x 48", or 2-1/2" x 60" linear drain grates to span desired final drain length
  • Product weight: 4.5 lb
  • Material: Brass
  • Suitable for commercial;hospitality;residential use
  • KOHLER® One-Year Limited Warranty

Required Products/Accessories

Optional Products/Accessories


Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare