# Master Flow 12 in. x 4 in. to 6 in. Universal Register Box

**Brand:** [Master Flow](https://shop.coreranger.com/brands/Master%20Flow)
**SKU:** RB12X4X6
**Price:** $18.98 · in stock
**URL:** https://shop.coreranger.com/product/master-flow-12-in-x-4-in-to-6-in-universal-register-box-100173649

## Specifications

| Spec | Value |
|---|---|
| Model # | RB12X4X6 |
| Pack Size | 1 |
| Internet # | 100173649 |
| Returnable | 90-Day |
| Store SKU # | 148970 |
| HVAC application | All HVAC types |
| Product Depth (in.) | 6 in |
| Product Width (in.) | 12 in |
| Product Height (in.) | 8 in |
| Product Weight (lb.) | 1.3 lb |
| Manufacturer Warranty | Free from Manufacturer Defect at Time of Delivery. |
| Brand/Model Compatibility | Universal |

## Description

Register Boxes create a straight (in-line) transition from round pipe or insulated flexible duct to an air register or grill. Available in an assortment of configurations. This particular item transitions from 12 in. X 4 in. register to a 6 in. pipe or flexible duct.

• Creates a straight, in-line transition to a register grille
• Durable galvanized steel construction
• Connect to round pipe or insulated flex duct