1/4 HP LAB VACUUM PUMP Stock Number: P-2299 Fisher Scientific Speed Aire 4Z335-0690 1/4 Hp, 1725 rpm, 115v, 1ph 1/4 inch in and out We also have a similar 1/3 Hp and 1/6 Hp (1) available Posted in Pump, Misc., Vacuum, Blowers.