Shower Stall Drain 1-1/2" (7924): For Prefab Shower Bases
By Maintenance Depot Plumbing Team · Last reviewed
Quick answer
The 7924 shower stall drain is a 1-1/2" drain for prefabricated shower stalls and bases. Fit it with gaskets, tighten the locknut evenly and check for leaks before closing walls.
Prefabricated shower stalls are a quick, affordable way to add a shower. The 1-1/2" shower stall drain (7924) is designed for these units, connecting the stall base to a 1-1/2" drain line.
Specs at a glance
| Spec | Detail |
|---|---|
| Product | Shower stall drain |
| Model | 7924 |
| Size | 1-1/2" |
| For | Prefab shower stalls and bases |
Where it fits
- Prefab fibreglass or acrylic shower stalls
- Utility and staff showers
- Pool houses and outdoor showers
1-1/2" vs 2" shower drains
Many building codes call for 2" drains for new showers, but many existing shower stalls and older installations use 1-1/2". Check your stall base and local requirements before buying.
Installation steps
- Fit the drain body through the shower base opening with the supplied gaskets or putty.
- Tighten the locknut from below so the seal compresses evenly.
- Connect to the 1-1/2" drain pipe and trap.
- Fit the strainer cover.
- Fill the base with a little water and check below for leaks before closing walls.
Tips
- Don't over-tighten. Acrylic and fibreglass bases can crack.
- Make sure the shower base is fully supported so it doesn't flex and break the seal.
Need a no-caulk option that installs from above? See the Eastman 2" no-caulk brass shower drain.
Frequently asked questions
Is 1-1/2" allowed for showers?
Many existing stalls use 1-1/2", but many codes call for 2" on new showers. Check your stall and local requirements.
Can I over-tighten the drain nut?
Yes, and it can crack acrylic or fibreglass bases. Tighten evenly and carefully.
How do I test for leaks?
Put water in the base and check below before closing the walls.