![PRO-KEY™ PRO-KEY™](data:image/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%2797%27%20height%3D%27227%27%20viewBox%3D%270%200%2097%20227%27%3E%3Crect%20width%3D%2797%27%20height%3D%27227%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E)
PRO-KEY™
Cat # |
Slab |
A |
B |
C |
Knockout |
3500 |
4″ |
3 1/8″ |
2″ |
3/4″ |
7/8″ |
4500 |
5″ |
4 1/8″ |
2 1/2″ |
3/4″ |
7/8″ |
5500 |
6″ |
5 1/8″ |
3″ |
3/4″ |
7/8″ |
7500 |
8″ |
7 1/8″ |
4″ |
3/4″ |
1 1/4″ |
9500 |
10″-12″ |
9 1/8″ |
5″ |
3/4″ |
1 1/4″ |
![PRO-KEY™ Specs PRO-KEY™ Specs](data:image/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27279%27%20height%3D%27307%27%20viewBox%3D%270%200%20279%20307%27%3E%3Crect%20width%3D%27279%27%20height%3D%27307%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E)
Advantages of PRO-KEY™
- Positive stake-to-key lock of PRO-KEY™ [Patent No. 5380122] prevents costly delays associated with resetting key joint when floating concrete. Stakes interlock with slots to prevent the key from rising off the stakes.
- Location of the key is 1/2 depth of slab as specified by ACI & PCA.
- LOCK SLOT™ stakes double as a butt splice.
- Radius formed key eliminates the sharp angles that produce a spalling tendency.
- ULTRA FINE profile at top edge eliminates surface voids, reduces spalling and produces architecturally pleasing joint lines in the finished slab.
- Tongue and groove design provide excellent load transfer characteristics for heavy wheeled traffic and prevents uneven settling associated with aggregate interlock.
- Eliminates costly form stripping and saw cutting. Replaces the slow and costly method of checker-board placement of concrete.
PRO-KEY™ Spec Sheet
PRO-KEY™ Installation Guide
All Keyway Profiles
PRO-KEY™ Accessories
![PRO-KEY™ removable cap yields straight void ready for sealing PRO-KEY™ removable cap yields straight void ready for sealing](data:image/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27390%27%20height%3D%27244%27%20viewBox%3D%270%200%20390%20244%27%3E%3Crect%20width%3D%27390%27%20height%3D%27244%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E)
PRO-KEY Installation Guide Video