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Due to time zones, our reply to your questions may not be immediately. If it's non-workdays, please kindly be patient and wait till Monday. 20 degrees Celsius to 55 degrees Celsius. Aluminum Alloy & Stainless Steel & Cast Iron. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Garage Doors & Openers\Opener Systems".The seller is "bestoffer666" and is located in this country: US. This item can be shipped to United States.