Metal And Plastic Plenum Boxes Home / Air Conditioning / Ducting Supplies / Metal And Plastic Plenum Boxes / Polymer Plenum Boxes 450 x 450 x 150mm With Top Entry Spigot Of 200mm Polymer Plenum Boxes 450 x 450 x 150mm With Top Entry Spigot Of 200mm Polymer Plenum Boxes 450 x 450 x 150mm With Top Entry Spigot Of 200mm £33.82 £28.18 (ex. VAT) Stock Status: In Stock Information Reviews A range of polymer plenum boxes offer a highly cost effective and lightweight method of ductwork connection to our grille range. The black finish improves installation aesthetics and the non-corrosive easy clean poly. 450 x 450 x 150mm With Top Entry Spigot Of 200mm Not yet reviewed Write an online review and share your thoughts with other shoppers! Be the first to review this product Related Products 50mm Wide 45 Meter Roll Of Aluminium Foil Duct Tape £11.84 £9.87 (ex. VAT) Ceiling Diffuser 4 Way Blow Without Damper White Finish Diameters 150mm to 600mm £35.63 £29.69 (ex. VAT) Ceiling Diffuser 4 Way Blow White Finish Diameter 445mm 300mm Neck £54.52 £45.43 (ex. VAT) Tecseal 100FR High Quality Solvented Duct Sealant 380cc Cartridge Tube £30.20 £25.17 (ex. VAT) Female Coupling For Circular Spiral Ducting 80mm To 630mm £7.29 £6.08 (ex. VAT) Male Coupling For Circular Spiral Ducting 80mm To 1250mm £3.24 £2.70 (ex. VAT) 100 Tough High Quality Duct / Cable Ties NT-33 For Flexible And Spiral Ducting Max Diameter 250mm £48.80 £40.67 (ex. VAT) Polymer Plenum Boxes 150mm Black Plastic Finish Top Entry 100mm To 150mm £29.57 £24.64 (ex. VAT) Polymer Plenum Boxes 200mm Black Plastic Finish Top Entry 100mm To 200mm £21.52 £17.93 (ex. VAT) Large Sized Polymer Plenum Boxes Black Plastic Finish Top Entry 100mm to 595mm £24.74 £20.62 (ex. VAT) Single Deflection Grille With Damper White Finish 100mm to 600mm £23.69 £19.74 (ex. VAT) Single Deflection Grille Without Damper White Finish 100mm to 600mm £22.51 £18.76 (ex. VAT)