# Master Flow 10 in. x 4 in. Register Box Saddle

**Brand:** [Master Flow](https://shop.coreranger.com/brands/Master%20Flow)
**SKU:** RBS10X4
**Price:** $17.98 · in stock
**URL:** https://shop.coreranger.com/product/master-flow-10-in-x-4-in-register-box-saddle-100211370

## Specifications

| Spec | Value |
|---|---|
| Model # | RBS10X4 |
| Pack Size | 1 |
| Internet # | 100211370 |
| Returnable | 90-Day |
| Store SKU # | 909503 |
| HVAC application | All HVAC types |
| Product Depth (in.) | 4 in |
| Product Width (in.) | 10 in |
| Product Height (in.) | 4 in |
| Product Weight (lb.) | 1.33 lb |
| Manufacturer Warranty | Free from Manufacturer Defect at Time of Delivery. |
| Brand/Model Compatibility | Universal |

## Description

This Master Flow 10 in. x 4 in. Register Box Saddle allows you to cut an opening of the appropriate size into the branch line and secures the saddle over the hole. Installs with sheet metal screws (not included). Seal and insulate ductwork for system efficiency and comfort.

• Creates a horizontal transition from pipe to register grille
• Durable galvanized steel construction
• Saddle style