DURA LIFT Ultra life max 2 in dual cage, sealed 6200ZZ bearing 10 Pack Gold Nylon Garage Door Roller "Cordless Leaf Blowers" DEPENDABLE Ideal for emergency magnetic starters DEPENDABLE Ideal for emergency or daily supplemental use ECONOMICAL Cut heating bills by warming only occupied areas COMFORT Manually adjust the heat setting to your desired temperature SAFE Built in oxygen depletion sensor (ODS) immediately shuts down the heater if carbon monoxide or lack of oxygen is detected CONVENIENT 1 continuous press of the battery assisted igniter makes ignition quick and effortless VERSATILE Includes all necessary hardware and bracket for wall mounting UPGRADEABLE Separately sold optional base legs (WBL100) provide the alternative of floor mounting to 2 3 4 in for versatile door prep preventing dirt and grime from penetrating the bearings Nylon rollers: reduces noise up to 75% more than standard rollers Do it yourself: perfect for the DIY consumer to replace old Lifetime guarantee: reinforced dual wall bearing cage