The 300-220mm adaptor is used to provide a reducing connection between standard 300mm and 220mm straight ducting or tee pieces. The adaptor requires slotless joiners at the 300mm & 220mm interfaces (Part No’s: TC1279- 287A & TC1279250A). Each connection produces smooth & strong joints. These are available separately.

• Includes cover (Part No: TC 1279-282) 
• Clips straight into joiner 
• Ribs included for extra strength 
• Tough, fire retardant material 
• Joiners (Part No’s: TC1279-287A & TC1279-250A); available separately 
• Also available without cover, as Part No: TC1279-281 
• Purchase by the unit