The Isokern 400mm internal diameter rebated liner accommodates very large open solid-fuel fires.

This pumice liner builds into masonry construct with brickwork or blockwork during chimney stack creation for cost effective setup. Pumice provides high insulation for swift performance temperature reach and prolonged cool down to keep efficiency. Lightweight material facilitates handling cutting and installation with long life.

• Internal diameter: 400mm
• Height: 1000mm
• Material: Volcanic pumice concrete
• Installation: Rebated ends. Surround with minimum 15mm LECA insulation by builder using brickwork or blockwork in oversized voids
• Compliance: CE certified to EN 1857. Document J compliant. HETAS compliant
• Use: Refer to Isokern flue-size calculator for sizing

This pumice liner is available for order and fits specialised large flue installations.