Big Boss Adaptor 3/4″ – 21.5mm to /110mm black
- Drill correct sized hole in required place using a hole saw. Chamfer the outer-edge of hole to help with inserting the fitting.
- Clean the outer edge of hole to help with inserting the fitting. Clean surface around hole. Apply suitable adhesive around hole and inner face of fitting.
- Insert fitting, using a little force and ensure correct flow direction.
- Once fitted connect appropriate pipe.