National Hardware 403188
Steel, zinc-plated with thermoplastic dials and rollers. Finger-adjustable dial cam provides 5/16 in vertical adjustment to properly hang doors. Wheels are 7/8 in Dia x 1/4 in W. CD 40-3188 and CD 40-3192 must be used together. Fine tune dial provides up to 5/16 in precise alignment of door to jamb. Acetal wheels for silent smooth door operation.
| Type | : | Adjustable, Offset Dial |
| Material | : | Steel |
| Suitable for | : | 3/4 to 1-3/8 in Bypass Door |