Get an instant price on made-to-measure ductwork

Build any galvanised rectangular part to your exact spec — from straight lengths and bends to reducers and fittings, in sizes like 400x200 duct — and get an instant price to DW144. No account, no waiting for a callback.

UK manufactured — in-house fabrication in Knebworth, Hertfordshire
Made to order — your exact dimensions
DW144 compliant — meets or exceeds the industry standard
Fast dispatch — site-ready with blue protective film on all ends
We'll beat any price — guaranteed

Rectangular Ductwork

Rectangular Straight Length — Galvanised rectangular duct for straight runs — made to any size, e.g. 400x200 duct
Rectangular Reducer — Rectangular reducer between two different duct sizes
Rectangular Bend / Elbow — Rectangular bend — 90° or 45° elbow to change duct direction
Rectangular Transition (Rect-to-Round) — Connects rectangular duct to circular spiral duct
Rectangular T piece — Offset connecting two off-centre rectangular ducts
Rectangular Plenum Box / Grille Box — Distribution box with multiple spigot outlets
Rectangular End Cap — Blanking plate to close off a rectangular duct end
Rectangular Offset — S-shaped offset section for parallel duct runs
Rectangular Shoe — Boot / take-off connecting a round spigot to a rectangular duct face
Rectangular Roof Cowl — Weatherproof roof termination cowl for rectangular duct
Rectangular Spigot — Circular spigot / stub connection fitted to rectangular ductwork
Rectangular Cravat — Sleeve / collar that wraps and seals a rectangular duct joint
Rectangular Loose Mez Frame — Loose mezzanine flange frame for jointing rectangular duct
Rectangular Mesh Bird Beak — Angled mesh bird-guard termination for rectangular duct
Rectangular Louvres — Custom-made galvanised louvre for weatherproof air intake and exhaust openings

Got a sketch or take-off?

Send us a hand sketch, take-off list, drawings or a schedule of fittings and our team will put together a tailored quote. Email orders@smart-vent.co.uk or use the contact form.