Product CatalogueStormwater SuppliesPoly FittingsPoly RiserPoly All Thread Riser 20 mm x 300 mm Back Poly All Thread Riser 20 mm x 300 mm Product ID: ORTH20300 Brand: 2025-05-24 From: $3.12 AUD View or buy the Poly Riser Poly Fittings - Poly All Thread Riser 20 mm x 300 mm from to discover other options and shipping details. Description Poly All Thread Riser 20 mm x 300 mm Back to Poly Fittings - Poly Riser More Poly Riser and others in our range 5a. Poly Riser 32mm x 150mm (1 1/4") 2i. Poly Riser 15mm x 750mm (1/2") 4b. Poly Riser 25mm x 200mm (1") 2g. Poly Riser SCH80 Grey 15mm x 300mm (1/2") 3b. Poly Riser 20mm x 100mm (3/4") 4c. Poly Riser 25mm x 300mm (1") Poly Riser Articulated 15mm x 225mm (0.5in) 3f. Poly Riser 20mm x 750mm (0.75") 2h. Poly Riser 15mm x 457mm (1/2") Poly Riser 25 mm x 2400 mm