Lindab WH45P Installation Booklet page 16

Circular series - 500 pa / 300 pa fire damper
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1.
Rock wool panel 50 mm thick with 140 kg/m³ density.
2.
PROMASTOP E PASTE or HILTI CFS-S ACR type sealant
3.
PROMASTOP E PASTE or HILTI CFS-CT endothermic varnish
D
Hole size: see table above
E
Damper protrusion from the wall: see table above
Lp Overlap length between fire damper and duct: see section Dimension
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