Middle Atlantic 1126A-1 525 Series 2-in to 1-in IPS Adapter
Overview
The Middle Atlantic 1126A-1 is a mechanical adapter designed to bridge a 2-in IPS opening to a 1-in (25.4 mm) diameter fitting — solving the common in-floor service fitting mismatch when a preset or afterset insert is sized for a larger IPS conduit than the cable management component requires. This is the right part when your 525 Series in-floor service fitting installation calls for a 1-in IPS termination but the rough-in or enclosure was cut for a 2-in IPS preset or afterset insert. TAA compliant, making it viable for federally funded or government facility projects where trade agreement requirements apply.
Compatibility
Designed for use with Middle Atlantic 525 Series in-floor service fitting systems, specifically with 2-in IPS preset and afterset inserts. Fits the standard 2-in IPS insert opening and steps down to a 1-in (25.4 mm) IPS port. Confirm your existing 525 Series insert accepts a 2-in IPS adapter before ordering — this part does not retrofit to non-525-Series enclosures or metric conduit standards.
Installation Notes
The 1126A-1 threads or seats into the 2-in IPS preset or afterset insert, reducing the opening to 1-in IPS for the service fitting component. Verify the insert orientation and thread engagement before finalizing — a misaligned adapter seat will prevent the service fitting from seating flush with the floor surface. No special tools are specified in available documentation; standard IPS fitting practices apply.
