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Prime Line B629 Flat Edge Sliding Door Roller Assembly, 3/4 in Dia x 1/4 in W, 2 Roller, Nylon
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Used on Croft and Keller sliding screen doors. 1/4"W x 3/8"Dia flat nylon ball bearing wheel with 3/8" threaded hex hub. Includes 2 rollers and 2 fasteners.
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Prime Line B551 Bottom Mount Concave Edge Sliding Door Roller Assembly, 1 in Dia x 7/32 in W
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Plastic roller with narrow center groove 7/32"W nylon wheel, concave edge. Includes a 8-32 x 3/8" machine screw with binder post nut. Fits on Air Control doors.
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Prime Line B 521 Concave Edge Spring Tension Roller Assembly, 1 in Dia X 1/4 in W, 2 Roller, Plastic
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1/4"W center groove nylon wheel, high tension 2-1/2"L heat-treated steel spring, and No.8 x 3/8" Phillips pan head sheet metal screw.
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Prime Line B 609 Concave Edge Spring Tension Roller Assembly, 1 in Dia X 1/4 in W, 2 Roller, Plastic
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Bent spring design used by Academy Mfg. and others. Center grooved 5/16"W wheel, 2-1/4"L x 5/16"W flat high-tension heat-treated steel spring, and No.8 x 3/8" Phillips sheet metal screw.
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Prime Line B 512 Concave Edge Spring Tension Roller Assembly, 1 in Dia X 1/4 in W, 2 Roller, Plastic
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Consists of 1/4"W center groove wheel, Heat treated, high tension adjustable steel M-spring. Used by several patio door manufacturers.
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Prime Line B 638 Concave Edge Spring Tension Roller Assembly, 1 in Dia X 1/4 in W, 2 Roller, Plastic
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Used by Metal Industries. Center grooved, 1/4"W, roller. 1-3/4"L, high-tension, heat-treated steel spring. Includes No.8 x 3/8" Phillips sheet metal screw.
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Prime Line B570 Concave Edge Sliding Spring Tension Door Roller Assembly, 1 in Dia x 1/4 in W
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Used by several patio door manufacturers. Consists of 1/4"W center groove wheel, high-tension heat-treated steel v-spring (2"L before and 2"L after bend).
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Prime Line B515 Concave Edge Sliding Spring Tension Door Roller Assembly, 1-1/4 in Dia x 1/4 in W
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Used as top and bottom roller by several patio door manufacturers. Consists of 1/4"W center groove nylon wheel, 2"L x 3/8"W steel housing, high-tension heat-treated steel spring.
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Prime Line B 649 Concave Edge Spring Tension Roller Assembly, 1 in Dia X 1/4 in W, 2 Roller, Plastic
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Plastic center grooved wheel with steel housing, high-tension steel spring. Fits on Columbia Uni-fit doors. Contents: 2 roller assemblies.
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Prime Line B518 Concave Edge Sliding Screen Tension Door Roller Assembly, 1 in Dia x 1/4 in W
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Used as top and bottom roller. Plastic wheel with center groove. 1-7/8"L housing, heat treated, high tension steel spring, and No.8-32 x 1-1/4" Phillips pan head screw.
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