11″ RS Adaptor To Lock-Top Adaptor

11″ RS Adaptor – The RS Adaptor lets you mate the Lock-Top to round flue tiles or solid-pack class-A chimney pipe. It is not for use with air-insulated class-A chimney.

Specifications:

• Fits 11″ round flue size
• 13″ x 13″ Lock-Top damper required