17% under what the other stores charge
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This is an extension kit that lengthens a Chamberlain Whisper Drive or Whisper Drive Plus belt drive opener's rail so it can lift a garage door up to 8 feet high. It includes the rail extension, a longer replacement belt and the mounting hardware, so it is a complete swap rather than a partial add-on. It suits owners of those belt drive models whose door is taller than the opener's standard rail covers. Rivals sell similar extension kits, but this one is matched to Chamberlain's own belt drive line, which keeps fit and belt length correct.
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Out of stockSold by UnbeatableSale LocalReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
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Lowest price we've seen: $59.99 on Nov 15 at Amazon. Tracked across 4 stores since Nov 15.
This rail extension kit is made for Chamberlain Whisper Drive and Whisper Drive Plus belt drive garage door openers. It extends the opener's rail so it can be used on garage doors up to 8 feet high.
The kit uses a quick install rail system. It includes the rail extension, a replacement belt and all the necessary hardware. The rail is made of steel and is black.
