It's tempting to try it, but door jambs aren't always rigid enough top to bottom for plumbing with a standard short level. And, longer levels are too long for leveling sills. Here's an affordable way to get both levels with one easy purchase. Great for installing doors, headers, sills and thresholds, this level set includes Stabile 196 Series 78-inch level is ideal for installing door frames, and a 32-inch level for installing headers, sills, and thresholds. Both levels feature a wide-profile design for optimal jobsite durability. With certified accuracy, The levels have both top and bottom readings and sport a new oversized, rubber hand grip design. Rubber pad end caps and wall grips are functional yet removable for flush leveling. Light and strong, These levels are easy to wield yet plenty durable. Clear vials with spring steel hairline indicators mean easy reading. The purchase is covered by a Stabile lifetime .