2 Pack, Narrow Roller Assembly. This sliding screen door roller assembly insert has a thinner high density polyethyleneframe than the Prime-Line part B 646. It has an adjustable high density polyethylene inner housing and high density polyethylene roller. The assembly inserts into the bottom or top of the sliding screen door using the included screws. The roller adjusts to the correct position needed. This style is found on Columbia sliding screen doors but is also used on a variety of other sliding screen door manufacturers. Please note dimensions and design when comparing with old roller.
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