Have had it for 5 or 6 years. Directions are ridiculous. The clips were the only problem. I actually think putting silicone caulk around all the panels makes it sturdier. Also stops leaks of air. The panels have yellowed slightly but I don't plan to clean them. The vent actuators from HF need to be installed and checked several times or they will stay open slightly. The ceiling fan runs all winter in reverse to blow heat around outside walls. Don't know wattage of heater as it was free with no labels. Works great though. Hope this helps.
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