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Blackthorn, Inc.
6113 Brookville Salem Rd.
Clayton, OH 45315

800-836-6113
Tel. 937-836-9296
Fax 937-836-9395


CYLINDRICAL WALL LOW DRAFT
Hole Size
36" I.D.
42" I.D.
48" I.D.
60" I.D.
72" I.D.
84" I.D.
96" I.D.
120" I.D.
6"
--
--
X
--
--
--
X
--
7"
--
--
X
--
--
--
X
--
8"
X *
X*
X
X
X
--
X
X
9"
X*
X*
X
X*
X*
--
--
--
10"
X*
X*
X
X
X*
--
X
--
10 1/2 "
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--
X
--
--
--
--
--
11"
X*
X*
X
X
X
--
--
--
12"
X *
X*
X
X
X
--
X
X
13"
X*
X*
X
X*
X*
--
--
--
14"
X *
X*
X
X*
X*
--
X
--
16"
X
X*
X
X
X
--
X
--
18"
X*
X*
X
X
X
--
X
X
20"
--
X*
X
X
X
--
X
--
22"
--
--
X
X
X
--
X
X
24"
--
--
X
X
X
--
X
--
26"
--
--
X
X
X*
--
X
--
28"
--
--
X
X
X
--
X
--
30"
--
--
X
X
X
--
X
--
32"
--
--
--
X
X
--
X
--
34"
--
--
--
X
X
--
X
--
36"
--
--
--
X
X
--
--
--
38"
--
--
--
--
X*
--
--
--
40"
--
--
--
--
X
--
X
--
42"
--
--
--
--
X
--
--
--
44"
--
--
--
--
X*
--
--
--
46"
--
--
--
--
--
--
X
--
48"
--
--
--
--
X
--
--
--
50"
--
--
--
--
--
--
X
--
52"
--
--
--
--
--
--
--
--
54"
--
--
--
--
--
--
X
--
56"
--
--
--
--
--
--
X
--

X = RMT
X* = PRMT

Standard Wall Thickness
24" I.D. = 3"
60" I.D. = 6"
36" I.D. = 4"
72" I.D. = 7"
42" I.D. = 4 1/2"
84" I.D. = 8"
48" I.D. = 5"
96" I.D. = 9"
 
120" I.D. = 11"
Note: We can build-up or cut-down any I.D.'d part to another wall thickness. Build Ups add 25%. Cutdowns add 10%.

Fiberglass hole-former Attachments and Accessories

Fiberglass Hole-Former Guide

MOUNTING HARDWARE
Magnets (350# & 475# Capacities)
Slide Bars
NC Thread Insert
1/2" Coil Insert; 3/4" Coil Insert
4" Coil Bolt; 6" Coil Bolt; 8" Coil Bolt
 

Copyright 2008 - Blackthorn, Inc. - All Rights Reserved

 

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