Ducting Extension 100mm SKU: 161324 MODEL: HSD100/1 Error. try again later You've successfully joined the club $ 8 .36 each Available on orders $50 to $1500. More info × Mitre 10 SAvailable at selected stores. Check your local store for details Variants 1m Extension Kit. Features and benefits Standards approved ducting. Most suited for bathroom and laundry applications.