403Slab-on-gradeElectrical and plumbing
Slab-on-Grade KO Support
Slab-on-grade support with exclusive integrated knockouts: two different pipe sizes, and couplings pass, with the same support.
Give us the size, drop and service and we’ll spec the part number and quote the build.
In use.
Function
Pre-pour
Temporary securement device: positions and secures the utility before and during the concrete pour.
No rating
No load rating is published; the cured concrete carries the utility.
The cured concrete carries the utility.
Custom order
Specify the size
Custom made per order.
Height: 12, 18 or 24 in. (XX other)
Hole ID: 1.00 (1.25 KO) / 1.25 (1.50 KO) / 1.50 (1.75 KO) / 1.75 (2.00 KO) / 2.00 in. (2.25 KO) (XX other)
KO quantity, 1 to 12; crossbar width per the table
Part number403A__B__C__Finish the selections to complete the request.
Knockouts
| 1 | 1.75 | 2 | 2.25 | 2.5 | 2.75 |
| 2 | 3.5 | 4 | 4.5 | 5 | 5.5 |
| 3 | 5.25 | 6 | 6.75 | 7.5 | 8.25 |
| 4 | 7 | 8 | 9 | 10 | 11 |
| 5 | 8.75 | 10 | 11.25 | 12.5 | 13.75 |
| 6 | 10.5 | 12 | 13.5 | 15 | 16.5 |
| 7 | 12.25 | 14 | 15.75 | 17.5 | 19.25 |
| 8 | 14 | 16 | 18 | 20 | 22 |
| 9 | 15.75 | 18 | 20.25 | 22.5 | 24.75 |
| 10 | 17.5 | 20 | 22.5 | 25 | 27.5 |
| 11 | 19.25 | 22 | 24.75 | 27.5 | 30.25 |
| 12 | 21 | 24 | 27 | 30 | 33 |
03 · Notes
From the Technical Data Sheet
- Slab-on-grade support with exclusive integrated knockouts: two different pipe sizes, and couplings pass, with the same support.
- Patent pending.
- Work safe: the installer secures pipes in place prior to rebar.
- Galvanized rod; corrosion resistant.
- Designed for demanding high-rise construction.
- Electrical and plumbing: positions PVC conduit, PVC-coated GRC, ENT and PVC- jacketed MC (NEC 352.30, 344.30, 362.30, 330.30) and sleeved PEX (IPC 305, UPC 312.2) in the pour, secured so they cannot float, shift or separate at joints; spacing per the specifications and the manufacturer.
- Drawings not to scale.
Send the spec. We’ll build the support.
Size, drop, and service. We’ll spec the part number and quote the build.