The mini-split rough-in box
Star Box™
A folded 16 gauge galvanized steel box for the stud bay behind the mini-split head. The line set, drain and control wire each get their own knockout and a defined path through the wall.
Built for the way pros install
One piece of steel, ready for the bay
Heavy gauge steel
Folded 16 gauge galvanized steel body. Rigid enough to stay square while every other trade works the same wall.
Adjustable mounting wings
Long slots let the box sit square on wood or metal studs that are not exactly on center. No shimming.
Four knockout sizes
Two stage knockouts, top and bottom. Each face has one small that opens to 1/2 or 3/4 inch and two large to 1-1/4 or 2 inch.
One piece, no loose parts
The mounting wings are part of the box. Nothing to assemble and nothing to drop behind the wall.
All the way around
See the box
Every flange, slot and knockout, in a 360° turn.
Install
Four steps. No special tools.
1. Position between studs
Set the box in the bay with the wings flat against the studs.
2. Screw the wings
Drive screws through the long slots into wood or metal studs at 16 inch centers.
3. Punch the knockout
Open the knockout size you need. No hole saw.
4. Run your lines
Run the line set, condensate drain and control wire, each through its own knockout.
By the numbers
Sized for a 2x4 bay
- Overall size18.26 by 10.02 by 3.38 inches overall, with a 14 by 8.12 by 3.38 inch body.
- Box depth3.38 inches, so the box sits inside a standard 2x4 stud bay without protruding past the framing.
- Mounting wingsLong slots for side to side adjustment when framing is not exactly on center.
- Four knockout sizesThree two stage knockouts on the top and three on the bottom. Each face has two large, 1-1/4 or 2 inch, and one small, 1/2 or 3/4 inch.
- Stud spacingSized for standard 16 inch on center bays, on wood or metal studs.
Specifications
Star Box™ specs
| Overall size | 18.26 x 10.02 x 3.38 in |
|---|---|
| Body | 14 x 8.12 in, 3.38 in deep |
| Material | 16 gauge (0.060 in) galvanized steel, folded, one piece |
| Mounting wings | Integral, long slots for side to side adjustment |
| Framing | Wood or metal studs at 16 in on center |
| Knockouts | Two stage, top and bottom. Each face: two large (1-1/4 or 2 in) and one small (1/2 or 3/4 in). Four sizes in all. |
| Carries | Line set, condensate drain and low voltage control wire |
| When to install | Rough-in, gut remodel or any open wall, before drywall |
| Per job | One box per indoor head unit |
| Made in | USA |
FAQ
Common questions
Is it compatible with all mini split systems?
The Star Box carries the line set for a standard wall mounted ductless indoor unit, so compatibility is about line sizes rather than equipment brand. The knockouts provide multiple opening sizes to accommodate the line set.
How do I install this in an existing wall?
It is designed for rough-in, before drywall. In a gut remodel or an open wall, it installs the same way. In a finished wall you would need to open the bay, which is usually not worth doing for this product alone.
What size line sets does it accommodate?
Three knockouts on the top and three on the bottom. On each face, the two large knockouts open to 1-1/4 or 2 inch and the small one to 1/2 or 3/4 inch, matched to standard conduit trade sizes.
Does it work with metal studs?
Yes. The mounting wings screw to wood or metal studs at 16 inch centers, and the long slots allow side to side adjustment where the framing is not exactly on center.
Do I need one per indoor unit?
Yes, one box per indoor head unit location. A three head system uses three boxes, one behind each head.
