Round Fiberglass Forms for Mortar Joints
Standard Premium Straight Wall/Flat Wall Structures

Responsive Table
Wall Thickness
Hole Form Face Dia.
(Inner toward core)
6 Inch Wall 8 Inch Wall 12 Inch Wall
Part No. Wall Taper (Degrees) Part No. Wall Taper (Degrees) Part No. Wall Taper (Degrees)
4"46104810
5"566
6"665685
8"86208810
10"1061010810
12"1261012810
14"1461014810
15"1561015810
16"1661016810
18"1861018810181210
20"2061020810201210
22"2261022810221210
24"2465 or 1524810241210
26"266102681026125 or 10
27"276527852712
28"2861028810281210
30"306103081030125
32"3261032810321210
34"3461034810341210
36"3661036810361210
38"3862038820381210
40"4061840818
41"4161841818
42"4261042810421210
44"4461444814441214
46"4661446814461214
48"4861048810481210
52"52665286
55"55655585
58"58655885
60"60656085
62"6261062810
65"6561065810
70"7061070810
78"7861078810