Model A Data Sheet: Operating Temperatures: 135F, 165F, 212F, 225F, 350F, 370F, 386F* Underwriters Laboratory Listed: Yes Loading: Minimum: | Ibs Maximum: 30 Ibs Size: Length: 2.625 Inches Width: .875 Inches Distance Between Centers: 1.750 Inches Material: Stamping: Steel Solder: Bismuth Alloy Unit Weight: .