Adjusted gross income, or AGI, is a person's total taxable income minus allowable tax deductions and personal exemptions. Taxable income includes all wages, salaries, tips, dividend and interest income and capital gains. These incomes comprise the Income portion of many IRS tax-return forms, including Form 1040A.
An H-style cap (cowl) is a chimney top constructed from chimney pipes shaped like the letter H. (Its image is included in cowl (chimney).) It is an age-old method of regulating draft in situations where prevailing winds or turbulences cause downdraft and backpuffing.
Ridge vents are installed at the ridgeline of the roof, and cap shingles or cap components are placed on top of the vent. Metal roofs have topped barns, buildings and country homes in the United States since the 1700s. But today's metal roof is nothing like the familiar standing-seam tin roof of years ago.