4" Fixed Grill Terracotta 100mm

• The 100mm diameter terracotta fixed grille is manufactured from High Impact Polypropylene
• The grille has a minimum free area of 3,809mm²
• It has a male spigot for connecting inside the 100mm round ducting
• The louvres are designed to prevent water ingress and where possible deflect low levels of wind pressure against the fan
• The louvres should be installed pointing downwards
• The 100mm diameter fixed grille is manufactured in compliance with Domestic Plastic Ductwork Specification DW/154 and meets UL94HB flammability standard