![Blue spring 5-8.5"WC part# 143-16-021-04](http://hvacbarn.com/cdn/shop/products/springblue_{width}x.jpg?v=1600291076)
Blue spring 5-8.5"WC part# 143-16-021-04
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$34.95
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Blue spring outlet range 5-8.5"WC for Sensus 243-12, 122-12, 121-12 gas pressure regulator. Part# 143-16-021-04
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