This roller assembly with M-shaped tension spring with a 1 in. steel ball bearing roller is used by a variety of patio door manufacturers. The heat treated tension spring is 2-5/16 in. long and shaped like an M, giving it the tension needed by the screen door to slide properly. Easy to install.

Manufacturer: Prime-Line
Manufacturer part number: B 512
$6.59
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Products specifications
- Features
#1 Used by a variety of sliding screen patio door manufacturers
#2 2-5/16 in. M-shaped tension spring
#3 1 in. concave ball bearing roller
#4 Steel heat treated tension spring and nylon roller
#5 2 pack
#6 Easy to install
#7 No adjustment needed
#8 For further dimensional information, please see the line drawing
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Prime B 512 Prime-Line 1109 Garage Door Bottom Seal, 2-3/16 in. x 10 ft., Vinyl Construction, Black (Single Pack) (EA)

$6.59