Poly Fitting Reducer by Palm Tree Enterprise Australia $4.10 200-150 - $4.10 250-200 - $5.30 300-250 - $9.00 350-300 - $6.50 400-350 - $7.60 450-400 - $8.20 200-150 250-200 300-250 350-300 400-350 450-400 Size (mm) 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart This product is used to create a more secure duct connection.