4 Pack Sliding Screen Door Tension Spring Fits for M-Shaped Rollers, 1-1/4" Concaved Steel Ball Bearing Replaces B 512, B 513, and B 746 Both top and Bottom are Replaceable

Brand: GeekNi

Color: Black

Features:

• [Compatible with] - For Columbia and Uni-Fit series doors as well as a variety of other sliding screen door manufacturers Please refer to the line art drawing and compare with your needs item before purchasing (Not Universal)
• [Included] - 2-5/16 inch M-shaped tension spring and comes with a 1-1/4 inch steel ball bearing roller
• [Quick installation] - simply snap into existing die-cast screen door frame corners To ensure smooth rolling To ensure smooth rolling, replace all four rollers on a single door panel at the same time. It replaces B 515, B 714, and B 796 door rollers
• [Durable Sliding Door Rollers] - screen door wheel is made of galvanized synthetic steel with a steel roller that is stable and does not break easily
• [Attention] - Please check the dimensions before purchasing If you have any questions, you can leave a message through Amazon's "Contact Seller" function, and we will usually respond within 24 hours

Binding: Tools & Home Improvement

model number: B 746

Part Number: B 746

Details: 4× Reinforced Tension Springs: 2-5/16 inch M-shaped springs engineered to maintain consistent door alignment, preventing sagging or derailment even under frequent use.
Streamlined Installation in Three Steps
Remove Old Rollers: Detach worn units from the door frame corners.
Snap-In Replacement: Align new rollers with the frame’s die-cast grooves and press firmly until fully seated.
Balance for Performance: Replace all four rollers simultaneously to ensure even weight distribution and eliminate uneven wear.
No specialized tools required—ideal for DIY repairs

Please check the dimensions before purchasing If you have any questions, you can leave a message through Amazon's "Contact Seller" function, and we will usually respond within 24 hours
Note: Seasonal maintenance (e.g., track cleaning and roller lubrication) extends product lifespan. Avoid forcing misaligned doors to prevent premature wear.

Package Dimensions: 5.9 x 3.9 x 1.9 inches