Mosmatic 21" Stainless Steel Surface Cleaners

Mosmatic's 21-inch stainless steel rotary surface cleaners come in two product lines at the same 21" diameter: the 80.774 Contractor line (SKU 6933) at $1,441.64 and the 80.771 Commercial line (SKU 6932) at $1,063.22 (prices at the time these pages were consolidated; live prices are on the variant cards below). Two jets rotate beneath the stainless housing on both, cleaning wide flat areas far faster than a wand — with no striping.

The difference is the tier, not the size. The 80.774 Contractor is the step-up line — it shares its Contractor-line part family with the 30" 80.775 — built for heavier commercial duty. The 80.771 Commercial is the entry tier at the same 21" cleaning path. Same diameter, same twin-jet stainless design; different part number and product line.

Pick the tier that matches your workload: daily commercial route work justifies the Contractor line; lighter or occasional jobs run fine on the Commercial line. Either way, confirm your pressure washer's GPM and PSI ratings suit a 21" cleaner before ordering — a 21" path needs enough flow to keep both jets spinning at full coverage.