15mm x 22mm Straight Plastic Tundish Compatible with: Ariston Comfort STI 125 Cylinders Ariston STI 150/210 Cylinders Ariston Contract STD 100 Cylinders Ariston Contract STD 100 Protech Cylinders Ariston Contract STD 125 Cylinders Ariston Contract STD 150/210 Cylinders Ariston Contract STD 300 Cylinders Ariston Contract STD 300 Protech Cylinders Ariston Contract STI 125 Cylinders Ariston Contract STI 125/150/210 Protech Cylinders Ariston Contract STI 150/210 Cylinders Ariston Contract STI 300 Cylinders Ariston Contract STI 300 Protech Cylinders Ariston STD 125/150/210 Litre Protech Unvented Cylinders Ariston STDI 100 UK Cylinders Ariston STDI 125/150/210 UK Cylinders Ariston STDI 300 UK Cylinders Ariston STI 125/150/210 Protech UK Cylinders Ariston STT 125/150/210 UK Cylinders Ariston Primo Unvented Cylinders Ariston Super Bravo Unvented Cylinders