Description:
They can enter through the furnace vents and cause serious damage by building nests that interfere with air flow. 2.8 Inch Diameter Flying Insect RV Furnace Screen fits Duo-therm and Suburban furnace vents.

Specifications:
1. the hook end will be attached to the screen， the spring is hooked on three wires.
2.Thread the crossbar spring end through the vent cover using the provided tool.. Make sure the spring grabs hold of the vent crossbars.
3.The spring will grab the vent cover from inside and hold the screen in place.
Size: 2.8" diameter x 1.2" height-0.12 each mesh grid.

Package Including:
2 x RV Flying Insect Screen
1 x Installation Tool

2 x Spring hooks