Fit before or after installation of soffit boards. Specifically to prohibit entrance of large insects. Use 70mm dia. holesaw.

Suitable for all kinds of vent ducting from waste pipes to bathroom fans. Allows a 10,000mm² air flow per unit providing an unobtrusive, economical, high or low level roof vent. UV-stabilised, durable polypropylene. Insect Screen Supplied

No need to buy expensive, bespoke profiled fillers. Flexible, self-adjusting fingers fill gaps when used with profiled tiles. Prevents entry of birds and large insects.