By ANSI Standard Specification A137.1 Metropolitan Ceramicsâ unglazed tile is classified as quarry tile, however, the exceptional technical characteristics noted enable them to be used in virtually any application suitable for ceramic tile. Metropolitan Ceramicsâ unglazed tile meets both the ASTM standards, the ANSI
Thickness is rated differently, depending on the material used. A thicker gutter system will be sturdier, more durable, and more expensive. Aluminum systems range from .019 to .032 inches in thickness. Copper is usually rated in weight, with a heavier weight indicating greater thickness. It is common to see 16-ounce and 20-ounce options for copper systems.
Most residential gutters come in two sizes-- 5 and 6 --and are made of either aluminum, steel, zinc, vinyl, or copper in a standard K style. The typical 5 inch K-style gutter comes with 2 x 3 inch downspouts. A larger residential gutter system would consist of 6 inch K-style gutter using a 3 x 4 inch downspout.