bifold door part

A home owner from Baltimore, MD says:
New part for top of bifold door circa 1955. the spring is broken and the door just swings out.
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Paul from SWISCO responded:


Unfortunately, your part is no longer available but we have top roller guides that are 7/8" diameter for wood closet doors that you should be able to substitute. See the options we've related up for you and carefully compare them to yours. They all have 7/8" top nylon rollers but the bases are different diameters, so you would need to drill the correct size hole to attach it to the door. Thank you!

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