Resources Shop By Image If you need a product, but not sure what it is called you can find it using our Shop By Image tool. Shop By Image Attic Ventilation Calculator Use our calculator to determine the amount of ventilation needed for your attic. Calculate Your Attic Ventilation Roof Pitch Angles Our Chart shows common roof pitches & the corresponding angles. View Product Installation Guides Various installation guides for products and like-products that FAMCO manufacturers. Browse Now Metal Materials (Top): Painted brown, black, white (Bottom): Copper, aluminum, stainless steel, galvanized steel