The third number is the center hole diameter

The T33303 Replacement Filter only fits the G0638 Dust Collector

See-Through No Special Feature Battery Acid Spill Kit UV Resistant No Sold as 1 each Weight 20

cylinder heads

Weighs 125 lbs

Aero Healthcare AK150BMTFC SUREFILL™ 4 Shelf Food Metal Cabinet 150 Class B - Meds Custom Label .021 The third number is theSurefill First Aid 150 Series 4 Shelf Food Cabinet is stocked with a large variety of quality first aid products catering to all common workplace injuries for medium American workplaces. Featuring clearly labeled packs for injuries to minimize treatment time and filled with the highest quality first aid items, including the SUPABOND adhesive worlds stickiest bandage.