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Square matte black shower drain with ABS flange

EXF BL-FK-4IN-BK 4.37" Matte Black Shower Fixture

SKU CH-RZ2E-KKT81 MPN BL-FK-4IN-BK

A 4.37-inch square shower drain with a 2-inch outlet, 304 stainless steel grate, ABS flange, adjustable height up to 1 inch and a removable cover for easy cleaning

  • TypeBL-FK-4IN-BK, FK-4IN-BK
  • FinishMatte
  • MaterialSteel
  • ColorBlack
  • Selling Unit1, Count
  • Matte black finish resists corrosion with 304 stainless steel construction
  • 37 inch square drain with 2 inch outlet prevents water ponding
  • Adjustable height up to 1 inch ensures proper floor alignment
  • Removable cover and hair trap simplify maintenance and cleaning
  • ABS flange and rubber collar create watertight seal for standard plumbing

Square Shower Drain 4.37 Inch

The EXF BL-FK-4IN-BK is a square shower drain measuring 4.37 inches with a 2 inch central outlet. It is designed for bathrooms, kitchens, garages, balconies and basements. The matte black finish uses 304 stainless steel for corrosion resistance. The ABS flange fits standard U.S. plumbing connections.

High Flow Without Filter Mesh

The drain operates without a filter mesh to maintain high flow capability and prevent ponding during sustained use. The seamless grid grate enhances water flow continuously. The embedded design provides an invisible look while the rubber collar secures the drain to the flange without leakage. The adjustable thread adapter allows height adjustment up to 1 inch for consistent performance.

Adjustable Height With Thread Adapter

Installation uses the included threaded adapter to adjust the drain height up to 1 inch. The rubber collar secures the square drain to the ABS flange to prevent water leakage. A lifting key is provided to remove the drain cover for cleaning. The kit includes drain body, base, hair trap, adapter, collar and lifting hook. Buyers who need a linear drain format cannot use this square model.

Highlights

  • Matte black finish resists corrosion with 304 stainless steel construction
  • 37 inch square drain with 2 inch outlet prevents water ponding
  • Adjustable height up to 1 inch ensures proper floor alignment
  • Removable cover and hair trap simplify maintenance and cleaning
  • ABS flange and rubber collar create watertight seal for standard plumbing

Specifications

TypeBL-FK-4IN-BK, FK-4IN-BK
FinishMatte
MaterialSteel
ColorBlack
BrandEXF
ModelBL-FK-4IN-BK, FK-4IN-BK
Selling Unit1, Count
Part NumberFK-4IN-BK

Questions about this item

Does the 4.37-inch drain generate any noise or heat when water runs continuously all day?

The 304 stainless steel body and ABS flange have no moving parts, so continuous water flow produces no mechanical noise and no measurable heat rise.

What existing plumbing components must already be in place for the 2-inch central outlet to connect properly?

A standard U.S. 2-inch waste pipe and a floor opening that matches the 4.37-inch square footprint are required before installation.

Will the adjustable thread adapter (max 1") align with an older shower pan that sits lower than current code height?

Yes, the threaded adapter provides up to 1 inch of height adjustment so the grate can sit flush with an existing pan surface.

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