PBC Linear RR45 0420 Linear Guide Rail, Redi Rail, Size 45, 420 mm Length, 45 mm Width, Aluminum Alloy 8860K65 Top Maximum Delivered Temperature 190 Top Maximum Delivered Temperature 190 Degrees F Included Valves Temperature and Pressure Relief Thermostat Mounting Surface Hot Outlet Type NPT Tank Lining Material Vitreous Glass Trade Agreement Act Compliant Lamp Life 50 Rail Type Slide Range (F) 0 248 Channel Material Steel Screw Type Low Profile Socket Head Cap Number of Rail Holes 7 Mounting Hole from Shaft End 30 mm Mounting Hole Center to Center 60 mm Mounting Hole Center to Shaft End 30 mm Mounting Hole Size M6 Overall Length 420 mm Overall Width 45 mm Overall Height 20