These laboratory hoods have a maximum airflow efficiency
Hemco
The new UniFlow LE AireStream Fume Hood (photo) is available in widths of 3, 4, 5, 6 and 8 ft. The LE fume hood incorporates a unitized superstructure, with non-metallic dual-wall construction for total chemical and corrosion resistance, strength and durability. The integral one-piece fume chamber is glass smooth with all coved corners. The AireStream baffle system with vector airflow slots directs the air through the fume chamber and through the exhaust outlet with minimum turbulence and maximum airflow efficiency, for low-flow constant-volume performance. Other features include a vapor-proof LED strip light fixture and control switch pre-wired to a single-point junction box. The hood is classified according to ASHRAE-110, NFPA-45 and U.L. 1805, as well as SEFA Recommended Practices. — Hemco Corp., Independence, Mo.