Hoistways of elevators and dumbwaiters penetrating more than three.
Gravity roof vent for elevator shaft.
Low profile gravity roof vents feature corrosion resistant weather resistant rigid aluminum construction and include integral bird screens.
Pul air ventilators are an economical choice where gravity or relief ventilation is required on industrial or commercial buildings.
3004 5 1 vents in the hoistway enclosures.
A built in curb cap offers prepunched holes to help provide for easy attachment to the roof curb.
Gravity ventilators gravity intake and relief ventilators for use in non powered applications.
Engineered and certified for both flat roof ventilation and steep slope ventilation the aura gravity ventilator is available for both residential and commercial buildings.
Shop for a gravity roof vent from grainger in either hooded or low profile design.
Lsug units include damper doors and a high volume rain gutter to prevent water infiltration.
The vents in the side of the hoistway enclosure below the elevator machine room floor or in the roof of the hoistway shall open either directly to the outer air or through noncombustible ducts to the outer air.
The pul air is available in galvanized steel aluminum stainless steel or copper construction.
Lsug units are available in 7 sizes from 24 to 60 inches.
Given an elevator shaft serving four 4 stories with three 3 floor ceiling penetrations question is a smoke vent required at the top of the elevator shaft.
Throat size 4 5 6 7 8 9 10 12 14 15 16 18 20 24 30.
Depending on the architecture of the building roof these vents were sometimes hard to hide.
Vent shown in image features a pv 24 c06 277 00 a large pop vent.
Size 4 5 6 7 8 9 10 12 14 15 16 18 20 24 30 a dia.
Our elevator vent is an economical easily installed solution for any elevator shaft or machine room application.
According to code elevator shafts hoistways meeting certain requirements must be adequately ventilated.
Lsug is a low silhouette gravity relief upblast ventilator designed for use on vertical high velocity exhaust systems.
Ul listed this gravity roof vent is rated to withstand wind pressures of over 50 psf which is equivalent to wind speeds exceeding 200 mph.
Gravity ventilators are designed to provide relief exhaust and intake supply airflow for a number of commercial and light industrial applications.
Gravity relief and intake vent.
The rational for having venting originally according to the code commentary was that most fire deaths occur due to smoke which could rise up the elevator shaft.
