Product CatalogueStormwater SuppliesPoly FittingsPoly Riser4d. Poly Riser 25mm x 450mm (1") Back 4d. Poly Riser 25mm x 450mm (1") Product ID: ORI0250500 Brand: 2025-07-16 From: $3.85 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 2i. Poly Riser 15mm x 750mm (1/2") Poly Riser Articulated 15mm x 225mm (0.5in) 3h. Poly Riser 20mm x 1500mm (3/4") 2g. Poly Riser SCH80 Grey 15mm x 300mm (1/2") 3f. Poly Riser 20mm x 750mm (0.75") Poly Riser 15mm x 900mm (1/2") 5a. Poly Riser 32mm x 150mm (1 1/4") Poly Cut Off Riser 20mm x 300mm (3 by 4") 3f. Poly Riser 20mm x 600mm (3/4") 4b. Poly Riser 25mm x 200mm (1")