Twin City Gravity Relief / Intake Ventilators - IM-4700 - Manual

Nomenclature
GRV – 120 B
GRV = Gravity Relief/Intake Ventilator Design Vintage (GRV)
TEL = Exhaust Louvered
TIL = Intake Louvered Throat Dimension (TEL/TIL)
LUG = Low Profile Upblast Gravity Exhaust Vent Size (LUG)
Nominal Throat Diameter (GRV)
090 = 9.00" 270 = 27.38"
120 = 12.13" 300 = 30.38"
160 = 16.25" 320 = 32.38"
180 = 18.25" 360 = 36.38"
210 = 21.25" 420 = 42.38"
240 = 24.25" 480 = 48.38"
©2014 Twin City Fan Companies, Ltd.
IM-4700
June 2014
Gravity Relief/Intake Ventilators
INSTALLATION, OPERATION & MAINTENANCE MANUAL
Model GRV Models TEL & TIL
Model LUG
Twin City Fan & Blower Catalog 4720 provides additional information on this equipment. This catalog can be found
at www.tcf.com or by contacting your local Twin City Fan & Blower sales representative.
Models
GRV, TEL, TIL, LUG