Extension springs
Wholesale Extension Springs
7-ft and 8-ft residential extension springs. Always identify an extension spring by its weight rating together with its color code — never by color alone.
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Specification matrix
Residential Extension Springs
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Buyer inquiry
Request extension spring details & pricing
Send the sizes and quantities you need. We reply with Ex Works factory pricing, production window, and specification confirmation.
Garage door extension spring buying guide
How Wholesale Buyers Specify Extension Springs
Start with door height
Seven-foot doors commonly use 25-inch relaxed springs; eight-foot doors commonly use 27-inch relaxed springs.
Confirm the weight rating
Select the spring by door weight rating and verify the color code. Never rely on a faded color alone.
Order singles or pairs
Choose the purchase format for each line while combining multiple ratings toward the wholesale quantity tier.
Before you order
Buyer FAQ
Ex Works terms, payment, factory connections, and how our Taiwan relationships support Vietnam production.