Shower Pan Molds

Marshall-Gruber is your source for the highest quality Shower Pan molds and other related accessory molds, including Shower Seats, Shower Ramps, Thresholds, Shelves, Curb Molds, Soap Dishes and more.

Shower Pans are available in two basic types - dedicated size (standard) single cavity molds, and very cost-efficient "Universal" Shower Pan molds.

Universal Molds are large molds that can be used to make any number of castings of different sizes and proportions from a single mold - thus they are an economical, highly versatile option for shops if you don't want to stock a lot of different shower pan molds.

Gruber offers many standard single-cavity shower pan molds in a wide range of sizes and shapes - organized into four product "families" listed below:
1054 Series 1052 Series 1051 Series 1050 Series
Number of Models 7 models 4 models 30 models 2 models + 17 Universal models
Slip Resistant Textured Pan Pattern (ASTM F 462-1994 Standard compliant)? Yes Yes Yes Yes
Integral Water Dam (Threshold) Yes Yes Yes No
Camberred/Chamferred Pan Sidewalls* Yes Yes (3 Sided) Yes (Slight Camber) No
Minimum 1/4" per foot drain slope? Yes Yes Yes Yes (1 Exception)
Accessibility Models? No Yes No No
Universal Pan Available? No No No Yes
National Building Standards Code compliant? Yes
Meet requirements ofASTM F 462-1994? Yes
Other Features Additional raised Dam to ensure no water leakage

* In this series, a three-sided threshold is provided, and the front threshold substitutes a short wheelchair ramp to offer wheelchair access to the shower.

1050 Series Universal Shower Pans

1050 Universal Shower 325Gives you great versatility and value in a single mold!

Universal Shower Pan molds simply make economic sense - since you can produce any number of different size and shape shower pan castings from a single "universal" mold. If size is an issue, you can order a smaller overall mold size (see chart below for available sizes). Universal Shower Pans can be cast at full size (as shown below), or smaller. Determine what size shower pan you need, and define that around the drain located where you need it. All 1050 Universal Shower Pans have center drains and a minimum drain slope of 1/4" per foot of horizontal distance. All 1050 Universal Shower Pans have center drains and a minimum drain slope of 1/4” per foot of horizontal distance. Surface is textured.

Click on image at right for a larger view

Detailed information - Universal Shower Pans


Related Products and Options - Shower Pans

Universal Shower Pans - Produce any number of different size and shape shower pan castings from a single "universal" mold.

Thresholds - add a threshold to our 1051 Universal Shower Pan with these threshold molds.

Universal Shower Ramps - The combination of a universal shower pan and universal ramp offer a versatile combination compared to the 1052 Access Shower Pan series.

Shower Seats - add a seat to a Universal Shower Pan installation, or for other applications.

Bathroom Accessory Molds - Hundreds of accessory molds that complement our shower pans and universal shower pan mold products. Explore them!

Mold Track - add mold track to your universal mold to more easily move it around on an existing conveyor system.


Female Mold Types - Learn which female mold type is right for your needs.

Metamold or Vinyl Ester Construction? - which mold construction method is right for you? Compare the pros and cons here.

New Mold Break-In Instructions - learn how to properly break-in your new mold for maximum mold longevity.

Shower Pan Slip Resistance Testing Results (applies to the 1050 and 1051 Series Marshall-Gruber Shower Pan molds)