2.5m piece used for undermount sink opening.
 
The Z Counterform Sink Form is used to create an opening for undermount sinks. 
 
2.5m long x 82mm tall self-adhering flexible sink form. Will conform to most undermount sinks. For double bowl sinks, the sink form can be notched with a utility knife to bridge the divider.  
 
**Sink must have vertical walls. For tight radius corners, sink form can be heated with a blow dryer or heat gun to soften the plastic so it bends easier. If using a zero radius sink, sink form will have to be cut into 4 pieces (one for each side of the sink). WILL NOT ADHERE TO COMPOSITE SINKS**