Hood Size: 25.25" x 25.25". Screen to Screen Size: 17" x 17". Screen height: 8. Made in the USA. Chimney caps help prevent costly repairs and keep your family safe from harm. Chimney caps protect your chimney from moisture such as snow, ice and rain and debris from close by trees. Chimney caps protect your home from wildlife such as birds and other nesting animals. Chimney caps act as a spark arrestor to prevent most ascending sparks from reaching the outside. Lifetime Limited Warranty. 24 Gauge Removable 100% Stainless Steel Hood with Scalloped Corners and Roll Formed Edges. 24 Gauge 100% Stainless Steel Base Flanges for Extra Strength in Mounting. 18 Gauge 3/4" 100% Stainless Steel Expanded Metal Mesh. Attractive Stainless Steel Finish. Tapcon Masonry Screws and Adhesive Included (A combination of both methods of attachment is recommended). Shipped Knock-down Easy Assembly. Recommended for use in situations where Oil or Coal is burned, or when Wood/Pellets are used as primary source of heat"