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Price Increases
To keep bringing you the very best quality, we’ve slightly adjusted prices on a few of our products by 3% to 5%. You will see these small updates reflected across the shop now.
We truly appreciate your support and understanding!.

PDF Catalog

Castellated Spigots

We supply practical fabrication materials for building custom plenums, ductwork, and HVAC components where standard manufactured fittings or boxes are not suitable.

Our range includes KOOduct duct board sheets, flange systems, and fabrication components commonly used for:

  • Small retrofit installations
  • Custom on-site plenum construction
  • HVAC duct modifications
  • Ventilation upgrades
  • One-off fabrication work
  • Commercial and residential HVAC projects

These products are ideal for installers and contractors needing flexible fabrication solutions for projects where custom sizing, site conditions, or limited space require something outside standard HVAC components.

Castellated OVAL Spigot 150Ø
RRP $24.00
$20.87
  • Initial price : $20.87
  • [ 1 - 49 ] : $20.87
  • [ 50 - 99 ] -3.0% : $20.24
  • [ 100 + ] -5.0% : $19.83
Castellated OVAL Spigot 200Ø
RRP $24.00
$20.87
  • Initial price : $20.87
  • [ 1 - 99 ] : $20.87
  • [ 100 + ] : $16.43
Castellated OVAL Spigot 250Ø
RRP $24.00
$20.87
  • Initial price : $20.87
  • [ 1 - 99 ] : $20.87
  • [ 100 + ] : $16.43
Castellated OVAL Spigot 300Ø
RRP $26.00
$22.61
  • Initial price : $22.61
  • [ 1 - 49 ] : $22.61
  • [ 50 - 99 ] -3.0% : $21.93
  • [ 100 + ] -5.0% : $21.48
Castellated OVAL Spigot 350Ø
RRP $26.00
$22.61
  • Initial price : $22.61
  • [ 1 - 49 ] : $22.61
  • [ 50 - 99 ] -3.0% : $21.93
  • [ 100 + ] -5.0% : $21.48
Castellated OVAL Spigot 400Ø
RRP $26.00
$22.61
  • Initial price : $22.61
  • [ 1 - 49 ] : $22.61
  • [ 50 - 99 ] -3.0% : $21.93
  • [ 100 + ] -5.0% : $21.48
Castellated OVAL Spigot 450Ø
RRP $26.00
$22.61
  • Initial price : $22.61
  • [ 1 - 49 ] : $22.61
  • [ 50 - 99 ] -3.0% : $21.93
  • [ 100 + ] -5.0% : $21.48
Castellated Spigot 150Ø
RRP $16.75
$14.57
  • Initial price : $14.57
  • [ 1 - 49 ] : $14.57
  • [ 50 - 99 ] -3.0% : $14.13
  • [ 100 + ] -5.0% : $13.84
Castellated Spigot 200Ø
RRP $18.70
$16.26
  • Initial price : $16.26
  • [ 1 - 49 ] : $16.26
  • [ 50 - 99 ] -3.0% : $15.77
  • [ 100 + ] -5.0% : $15.45
Castellated Spigot 250Ø
RRP $20.60
$17.91
  • Initial price : $17.91
  • [ 1 - 49 ] : $17.91
  • [ 50 - 99 ] -3.0% : $17.37
  • [ 100 + ] -5.0% : $17.01
Castellated Spigot 300Ø
RRP $22.50
$19.57
  • Initial price : $19.57
  • [ 1 - 49 ] : $19.57
  • [ 50 - 99 ] -3.0% : $18.98
  • [ 100 + ] -5.0% : $18.59
Castellated Spigot 350Ø
RRP $24.40
$21.22
  • Initial price : $21.22
  • [ 1 - 49 ] : $21.22
  • [ 50 - 99 ] -3.0% : $20.58
  • [ 100 + ] -5.0% : $20.16
Castellated Spigot 400Ø
RRP $25.70
$22.35
  • Initial price : $22.35
  • [ 1 - 49 ] : $22.35
  • [ 50 - 99 ] -3.0% : $21.68
  • [ 100 + ] -5.0% : $21.23
Castellated Spigot 450Ø
RRP $27.50
$23.91
  • Initial price : $23.91
  • [ 1 - 49 ] : $23.91
  • [ 50 - 99 ] -3.0% : $23.19
  • [ 100 + ] -5.0% : $22.71
Castellated Spigot Dampered 150Ø
RRP $28.70
$24.96
Castellated Spigot Dampered 200Ø
RRP $31.60
$27.48
Castellated Spigot Dampered 250Ø
RRP $34.65
$30.13
Castellated Spigot Dampered 300Ø
RRP $38.20
$33.22
Castellated Spigot Dampered 350Ø
RRP $41.15
$35.78
Castellated Spigot Dampered 400Ø
RRP $43.15
$37.52
Flat Pack Castellated Spigot 150Ø
RRP $7.50
$6.52
Flat Pack Castellated Spigot 200Ø
RRP $7.50
$6.52
Flat Pack Castellated Spigot 250Ø
RRP $11.00
$9.57
Flat Pack Castellated Spigot 300Ø
RRP $13.50
$11.74