Electrical Boxes and Ballast Screens R-7500 Series
Cast Iron Stop Plank Grooves
Sewage Disposal Castings
Groove supplied in standard
three-foot maximum lengths, with slot dimensions as shown in table.
Fractional sections may be obtained to give any overall
length required.
NOTE: Most “Y” & “Z” dimensions can be furnished
interchangeably and are not limited to
dimensions opposite each other.
Specify:
Catalog number and type
Groove type otherwise Type A furnished
“Y” and “Z” dimensions.
“A”, “B”, “C” dimensions.
Special requirements. Send
detail.
Dimensions in inches
Catalog
No.
Y
Z
R-7500-22
2
2
R-7500-33
3
3
R-7500-44
4
4
R-7500-66
6
6
R-7500-86*
8
6
*Not available in Type E.
Typical Channel
NOTE: Most “Y” and “Z” dimensions can be furnished
interchangeably and are not limited to dimensions opposite each other.
Note cast iron grooves in concrete.
