or 15-28 VAC power range

The "/U" suffix simply designates "Universal" or retail packaging but the specifications and dimensions are identical

While the hole patterns may align with other units

Designed for use in "dry" evaporators

Laars Heating Systems R2086900 Ignitor 321894-706 or 15-28 VAC power rangeWhen you're troubleshooting ignition failures on high capacity gas fired units, the Laars Heating Systems R2086900 Ignitor is the critical OEM component for restoring reliable combustion. This generator spark ignitor is engineered as a solid state ignition solution, specifically designed for Laars Pennant boilers and large scale water heating systems within the 1000 3000 model range. As a veteran tech knows, a degraded electrode or cracked ceramic