EFCO 403 Series Roto Vent for Storefront - Manual (Page 7)

(4) PLACES
.136 DIA. (#29 DRILL)
SHEAR BLOCK HOLES
(5) PLACES
SECTION IV -
TEMPLATE
LOCATING & DRILLING
.172 DIA. (#18 DRILL)
SCREW SPLINE HOLES
SET EDGES OF TEMPLATE FLUSH WITH SIDES OF VERTICALS
CUT OUT AND USE FOR LOCATING HOLES
SHEAR BLOCK
OR
SCREW SPLINE
SHEAR BLOCK HOLES
1.508
1.047
.250
.250
5.500
1.070
.875 2.750 .875
9959
9952
K159
9129
9229
PAGE 6
EXTERIOR - 402/403 SYSTEMS
INTERIOR - 401 SYSTEM