Prime-Line N 6503 Roller Assembly 7/8'' Dia. x 1/4'' W Side Mounting Nylon 60-lb (4-PACK) THE (4) ARE BRAND NEW AND COMPLETE WITH THEIR HARDWARE! THE PACKAGES WERE OPENED AND INSPECTED. The Prime-Line N 6503 roller assembly is a heavy-duty, top-hung side-mount solution for bi-fold and wardrobe doors up to 60 lb per pair. Featuring 7/8" diameter convex-edge nylon wheels with ball bearings, it ensures smooth, quiet operation and extended service life?even under frequent use. The offset steel bracket is vertically adjustable for precise door alignment and height correction, accommodating door thicknesses from 3/4" to 1-3/8". Designed for compatibility with Acme, Stanley, and similar steel-framed bi-fold systems, each 4-pack includes four complete rollers (two pairs) and mounting hardware for two doors. Features - 7/8" diameter x 1/4" wide convex-edge nylon rollers reduce friction and noise on track - Ball bearing hubs enable effortless rolling and resist binding over time - Adjustable steel bracket allows 1/2" vertical fine-tuning for level door operation - Side-mount, top-hung design fits standard Acme/Stanley upper track configurations - Supports doors 3/4" to 1-3/8" thick with secure pan-head screw attachment - Nylon wheels resist chipping, wear, and temperature-induced deformation - Silver-finish steel bracket offers strength without added weight - Includes (4) rollers + (12) #8 x 3/4" Phillips pan-head sheet metal screws - Replaces worn OEM rollers without modifying existing track or stile - Tested for 60 lb capacity per pair?ideal for solid-core or mirrored wardrobe doors Specifications - Brand Name: Prime-Line - Model Name: Prime-Line N 6503 - Part Number: N 6503 - Product Type: Roller Assembly - Roller Diameter: 7/8 in - Roller Width: 1/4 in - Roller Material: Nylon - Roller Edge Type: Convex - Bearing Type: Ball - Bracket Material: Steel - Finish: Unfinished (Silver) - Mounting Type: Side Mount, Top Hung - Offset Size: 1/2 in - Adjustable: Yes (Vertical) - Weight Capacity: 60 lb (per 2-roller assembly) - Compatible Door Thickness: 3/4 ? 1-3/8 in - Suitable For: Acme, Stanley Wardrobe Doors - Number of Items: 4 (2 pairs) - Included Hardware: (12) #8 x 3/4" Phillips Pan-Head Screws - Product Dimensions: 2.00 x 0.75 x 1.00 in (per roller assembly) - Item Weight: 0.64 lb (4-pack) - Country of Origin: China - UPC: 049793765031 - Global Trade Identification Number: 00049793765031 - Manufacturer: Prime-Line Products Product Application This roller assembly is used by handymen, contractors, and property maintenance teams when repairing or upgrading steel-framed bi-fold closet doors in apartments, townhomes, and custom closets?particularly where smooth, silent operation and long-term reliability are needed. The adjustable bracket corrects sagging or misalignment caused by settling frames or worn hardware, while the ball-bearing nylon wheels glide consistently on aged or slightly corroded tracks. Commonly installed in high-traffic areas like master suites or laundry rooms, the N 6503 restores professional-grade performance without replacing tracks or doors. Its 4-pack format supports full-door service (2 rollers per door) and offers inventory efficiency for multi-unit rehab projects?delivering durability, ease of install, and lasting value.