Product CatalogueStormwater SuppliesPoly FittingsPoly Riser4d. Poly Riser 25mm x 450mm (1") Back 4d. Poly Riser 25mm x 450mm (1") Product ID: ORI0250500 Brand: 2026-12-04 From: $4.04 AUD View or buy the Poly Riser Poly Fittings - 4d. Poly Riser 25mm x 450mm (1") from to discover other options and shipping details. Description Back to Poly Fittings - Poly Riser More Poly Riser and others in our range 6a. Poly Riser 40mm x 150mm (1 1/2") Poly All Thread Riser 20 mm x 300 mm 2f. Poly Riser 15mm x 300mm (1/2") 3b. Poly Riser 20mm x 100mm (3/4") 3f. Poly Riser 20mm x 750mm (0.75") Poly Riser Continuous Thread 15mm x 150mm (1 by 2") 4b. Poly Riser 25mm x 200mm (1") 7c. Poly Riser 50mm x 900mm (2") Poly Cut Off Riser 20mm x 300mm (3 by 4") 3d. Poly Riser 20mm x 300mm (3/4")