Short Extension Kit 900mm Kit includes 2 x 450mm ducts with adjustable elbow and 1 x ceiling diffuser connector. Nett Price : £55.00 VAT : £9.53 UK Delivery Price : £8.50 Total : £73.03 Long Extension Kit 1800mm Kit includes 4 x 450mm ducts with adjustable elbow and 1 x ceiling diffuser connector. Nett Price : £85.00 VAT : £14.03 UK Delivery Price : £8.50 Total : £107.53 Premium Stainless Steel Diffuser Frame Premium Stainless Steel Diffuser Frame with Flush fitting Stainless Steel Frame and toughened glass lens. Nett Price : £40.00 VAT : £7.28 UK Delivery Price : £8.50 Total : £55.78 When ordering more than one extra the delivery fees will be: Basic kit + Extension kit = £8.50 1-2 Extension Kits = £8.50 For all other delivery fees, you will be contacted with the costs