Linear vs Square Shower Drains: Is a 12" Linear Drain Right?
By Maintenance Depot Plumbing Team · Last reviewed
Quick answer
Choose a linear drain like the 12" Bisman BMFD12B for curbless showers, large tiles and a modern look. Choose a square drain for tighter budgets or when replacing an existing centre drain.
Choosing a shower drain affects how your floor is built, which tiles you can use and how the room looks. Here's how a 12" linear drain like the Bisman BMFD12B compares with a traditional square drain.
Specs at a glance
| Spec | Detail |
|---|---|
| Feature | Linear drain vs square drain |
| Floor slope | One direction vs four directions |
| Tile size | Large-format vs smaller tiles |
| Typical position | Wall or entry vs centre of floor |
| Bisman BMFD12B | 12" x 2-3/4", 304 stainless, fits 2" flanges |
Square (point) drains
- Sit in the centre of the shower floor
- The floor slopes from all four sides toward the drain
- Usually need smaller tiles to follow the slope
- Typically lower cost and simple to install
Linear drains
- A long, narrow channel, usually against a wall or at the shower entry
- The floor slopes in one direction only
- Works with large-format tiles for a seamless look
- Ideal for curbless, walk-in and accessible showers
Why the Bisman 12" linear drain suits smaller showers
At 12" long and 2-3/4" wide, it fits compact shower spaces while still giving the linear look. It features a 304 stainless steel body and grate, anti-odor protection, a removable hair strainer and adjustable levelling feet. It connects to 2" ABS, PVC or cast iron flanges; the drain flange is sold separately.
Which should you choose?
- Pick linear if you want large tiles, a curbless entry or a modern, minimal look.
- Pick square if you're on a tighter budget or replacing an existing centre drain.
Need more length?
For wider showers, step up to the 18" or 24" Bisman linear drains, also available in matte black.
Frequently asked questions
Are linear drains more expensive to install?
Usually a little, because they need careful levelling and waterproofing, but they allow simpler tiling.
Can I replace a square drain with a linear one?
It is possible but often means rebuilding the shower floor slope.
Which drain is better for accessibility?
Linear drains suit curbless, step-free showers, which are easier for people with limited mobility.
Buy Bisman Linear Floor Drain 12" x 2 3⁄4 at Maintenance Depot