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Title: Filter doesn't fit
Review: I bought filters that are supposedly the same size as the ones in my furnace, and it turns out they are about 1/4 inch too wide to fit in the filter slot. I can't modify the slot, and I can't force the filter in without completely destroying it. I made the assumption, which has worked for several years, that the exterior dimensions would be standard. On the plus side, it had foam sealing strips pre-installed top and bottom. I haven't contacted the manufacturer yet, which I will try to do.
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