Millermatic 252 vs Unlimited 140

Same fields. Each cell is that model's published text. A blank stays "Not published by manufacturer." The outlet chip does not hide either column.

Spec	Millermatic 252	Unlimited 140
Process	MIG (GMAW) and flux-cored (FCAW). Source	GMAW/FCAW, SMAW, and GTAW. Source
Output amp range	30–300 A. Source	GMAW/FCAW 30–140 A. SMAW 30–75 A. GTAW 20–110 A. Source
Rated duty cycle	200 A at 24 VDC, 60% duty cycle. 250 A at 26.5 VDC, 40% duty cycle. Source	GMAW/FCAW 30% at 90 A. SMAW 40% at 75 A. GTAW 20% at 110 A. Source
Input voltage and plug	208/240 V, single-phase, 60 Hz, or 230/460/575 V, single-phase, 60 Hz. On the 208/240 V row, amps input at the 200 A, 60% rating are 57.0 A at 208 V and 50.8 A at 240 V. Source	120 VAC / 60 Hz. Current input: GMAW/FCAW 21 A, SMAW 21.3 A, GTAW 20.5 A. Source
Wire or rod size	Solid/stainless steel .023–.045 in. (0.6–1.2 mm). Flux-cored .030–.045 in. (0.8–1.2 mm). 12 in. spool. Source	Solid core .025 / .030 / .035 in. Flux-cored .030 / .035 in. Wire speed 80–275 IPM. Spool capacity up to 12 lb. Source
Weight	205 lb. (93 kg). Source	Not published by manufacturer Source
Material thickness	Not published by manufacturer Source	Not published by manufacturer Source