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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.

List Photos
Code Product Price Min.
Quantity		 Status Quantity
CS300 CS300 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
0 Available from Stock
CS350 CS350 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
0 Available from Stock
CS400 CS400 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
0 Available from Stock
CS450 CS450 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
1 Available from Stock
CSD150 CSD150 Castellated Spigot Dampered 150Ø
RRP $28.70
$24.96 		0 Available from Stock
CSD200 CSD200 Castellated Spigot Dampered 200Ø
RRP $31.60
$27.48 		0 Available from Stock
CSD250 CSD250 Castellated Spigot Dampered 250Ø
RRP $34.65
$30.13 		0 Available from Stock
CSD300 CSD300 Castellated Spigot Dampered 300Ø
RRP $38.20
$33.22 		0 Available from Stock
CSD350 CSD350 Castellated Spigot Dampered 350Ø
RRP $41.15
$35.78 		0 Available from Stock
CSD400 CSD400 Castellated Spigot Dampered 400Ø
RRP $43.15
$37.52 		0 Available from Stock
Available from Stock
Castellated Spigot 300Ø CS300
RRP $22.50
$19.57
  • Initial price : $19.57
  • [ 1 - 49 ] : $19.57
  • [ 50 - 99 ] -3.0% : $18.98
  • [ 100 + ] -5.0% : $18.59
Available from Stock
Castellated Spigot 350Ø CS350
RRP $24.40
$21.22
  • Initial price : $21.22
  • [ 1 - 49 ] : $21.22
  • [ 50 - 99 ] -3.0% : $20.58
  • [ 100 + ] -5.0% : $20.16
Available from Stock
Castellated Spigot 400Ø CS400
RRP $25.70
$22.35
  • Initial price : $22.35
  • [ 1 - 49 ] : $22.35
  • [ 50 - 99 ] -3.0% : $21.68
  • [ 100 + ] -5.0% : $21.23
Available from Stock
Castellated Spigot 450Ø CS450
RRP $27.50
$23.91
  • Initial price : $23.91
  • [ 1 - 49 ] : $23.91
  • [ 50 - 99 ] -3.0% : $23.19
  • [ 100 + ] -5.0% : $22.71
Min.Quantity
1
Available from Stock
Castellated Spigot Dampered 150Ø CSD150
RRP $28.70
$24.96
Available from Stock
Castellated Spigot Dampered 200Ø CSD200
RRP $31.60
$27.48
Available from Stock
Castellated Spigot Dampered 250Ø CSD250
RRP $34.65
$30.13
Available from Stock
Castellated Spigot Dampered 300Ø CSD300
RRP $38.20
$33.22
Available from Stock
Castellated Spigot Dampered 350Ø CSD350
RRP $41.15
$35.78
Available from Stock
Castellated Spigot Dampered 400Ø CSD400
RRP $43.15
$37.52