If you are buying a laundry soap vending machine for a small product range, decide what each column will sell before comparing total capacity. Three columns can mean three different selections, but they can also hold repeated stock of the same soap. Those arrangements serve different needs.
Vend-Rite describes its VendMaster 394 as a three-column, coin-slide-operated vendor. It says an operator can offer three selections or double up on a soap product for more capacity. The same page lists a capacity of 69 boxes.
These are two separate specifications: three columns describe the available dispensing positions; 69 boxes describe the advertised stock capacity. They do not mean 69 different products. Nor does the listing establish that any detergent carton will fit. Ask the supplier to confirm the actual box dimensions and approved products for the proposed arrangement.
With three different products, each column has its own role. Before ordering, write down the exact item for every column, including pack size and label. This makes it easier to check that the display and coin slide identify the same purchase.
Repeating soap in two columns leaves fewer positions for other products. That may be a reasonable choice when your own sales or refill records show stronger soap demand. Without those records, treat it as a stocking decision to review, rather than assuming it will improve sales. The manufacturer's repeat-soap option is not a forecast of demand at your laundry room.
For the separate question of what one pack contains and which washing machine it is intended for, see our laundry detergent dose and pack-size guide.
The 394 page lists ESD or Greenwald V8 coin slides and says buyers should specify the vend amount and coin-slide preference when ordering. It also describes pricing by column. Put those choices beside the corresponding product on the order sheet so the supplier can confirm the complete configuration.
A coin-slide specification is not evidence of card acceptance. If cashless payment is a requirement for your project, request a separately documented configuration instead of assuming a reader can be added to this model.
Vend-Rite says package weights lock out the vend cycle when a column is empty. Ask the supplier to show how that mechanism works with the agreed boxes, including the last box and an empty column. This is a manufacturer-described feature, not a test result from WEIMI.
The listing includes a hanger bracket and offers security straps as an option. It also warns that the locks shown in the security photograph are for display purposes only. Confirm the supplied mounting hardware, locks and optional items in writing. Have the installer check the proposed mounting location; a bracket in the package does not establish that every wall is suitable.
A useful enquiry states the three proposed products, whether any column will repeat soap, actual box dimensions, payment requirements and mounting location. Request confirmed capacity for those products rather than treating the headline box count as universal.
This review describes a third-party model to explain a buying decision. It does not establish that WEIMI supplies the same mechanism or compatible parts. For a WEIMI project, send your packaged products and operating requirements for a separate configuration review: Get My Custom Quote.