Horn of America sewing machine cabinets use three standardized machine opening (cutout) sizes across their entire product line to accommodate different generations and sizes of sewing, quilting, and embroidery machines. [1, 2, 3]
The exact opening size for your specific Horn cabinet will depend on which category your model falls into:

1. Standard / Mid-Size Machine Opening: 25" × 13"
This opening is designed for standard, small, and mid-sized sewing machines.

• Common Models: Horn Model 4100, Model 4200, Model 5280, and Model 5400.
• Machine Fit: Fits most machines with a base width under approximately 23 inches. Note: Top-tier, oversized embroidery machines will not fit into this cutout.

2. Large / Extra-Large Machine Opening: 31" × 15.5"

• Introduced to accommodate oversized sewing and quilting machines, as well as mainstream large embroidery units. 
• Common Models: Horn Model 8080, Model 8090, and Model 8479.
• Machine Fit: Built specifically to house large format setups like the Baby Lock Solaris and Brother Luminaire series. 

3. Ultimate "Super-Size" Machine Opening: 34" × 15.5" 

• This is Horn's largest machine cutout, engineered for the newest, ultra-large elite sewing and embroidery machines on the market. 
• Common Models: Horn Model 9030, Model 9080, and Model 9479.
• Machine Fit: Provides the necessary clearing for massive machines such as the Brother Aveneer EV1, Baby Lock Radiance, Bernina 990, and Janome Continental M17. 

Direct Size Comparison Table

Important Acrylic Insert Reminder

Because these three opening sizes are rectangular, you will need a custom-cut acrylic insert (Plexiglass plate) to fill the remaining gap around your specific sewing machine. When purchasing an insert, you must match the template to the exact model number of your Horn cabinet and the brand/model of your sewing machine