5" x 7" Aluminum Preformed Step Flashing - 1 Piece 1573795

These aluminum preformed shingles are installed under shingle lines along dormer or roofline slopes for protection from water infiltration. 
Features
Installed under the course of shingles along the roofline to prevent water intrusion
Offers protection along Chimneys, dormers, and roof to wall areas.
Will not rust, chip, or crack
Designed to use with roofing shingles