Installation
900004-00, 03/2017
Innovative Hearth Products
DRT2000 and DRC2000 Direct-Vent Fireplaces
23
Vent section length table
Table 15 will assist calculating how many vent sections are needed for the planned vent confi guration. When a vent
section is engaged with another section, its effective length will be 1-1/2” shorter.
Table 15 - Vent Section Length
Nominal Section
Length (in.)
6 12243648
Total Qty
Net Section Length
(in.)
4.5 10.5 22.5 34.5 46.5
Height of Vent
Number of Vent Sections
in. ft
4.5 0.375 1 0 0 0 0 1
9 0.75 2 0 0 0 0 2
10.5 0.875 0 1 0 0 0 1
15 1.25 1 1 0 0 0 2
22.5 1.875 0 0 1 0 0 1
31.5 2.625 0 3 0 0 0 3
34.5 2.875 0 0 0 1 0 1
37.5 3.125 1 1 1 0 0 3
43.5 3.625 0 2 1 0 0 3
45 3.75 0 0 2 0 0 2
46.5 3.875 0 0 0 0 1 1
51 4.25 1 0 0 0 1 2
55.5 4.625 0 1 2 0 0 3
57 4.75 0 0 1 1 0 2
67.5 5.625 0 0 3 0 0 3
69 5.75 0 0 0 2 0 2
73.5 6.125 1 0 0 2 0 3
79.5 6.625 0 1 0 2 0 3
81 6.75 0 0 0 1 1 2
91.5 7.625 0 0 2 0 1 3
93 7.75 0 0 0 0 2 2
97.5 8.125 1 0 0 0 2 3
103.5 8.625 0 0 0 3 0 3
1089100304
117 9.75 1 0 5 0 0 6
118.5 9.875 1 1 0 3 0 5
126 10.5 0 0 1 3 0 4
130.5 10.875 1 0 1 3 0 5
135 11.25 0 0 6 0 0 6
139.5 11.625 0 0 0 0 3 3
142.5 11.875 1 0 0 4 0 5
14412100034
154.5 12.875 1 1 0 0 3 5
160.5 13.375 0 2 0 0 3 5
172.5 14.375 0 0 0 5 0 5
177 14.75 1 0 0 5 0 6
186 15.5 0 0 0 0 4 4
196.5 16.375 0 1 0 0 4 5
207 17.25 0 0 0 6 0 6
211.5 17.625 1 0 0 6 0 7
217.5 18.125 0 1 0 6 0 7
229.5 19.125 0 0 1 6 0 7
232.5 19.375 0 0 0 0 5 5
241.5 20.125 0 0 0 7 0 7
246 20.5 1 0 0 7 0 8
Nominal Section Length
(in.)
6 12243648
Total Qty
Net Section Length (in.) 4.5 10.5 22.5 34.5 46.5
Height of Vent
Number of Vent Sections
in. ft
25221010708
27623000808
279 23.25 0 0 0066
280.5 23.375 1 0 0809
289.5 24.125 0 1 0067
301.5 25.125 0 0 1067
310.5 25.875 0 0 0909
325.5 27.125 0 0 0077
330 27.5 1 0 0078
345 28.75 0 0 0 10 0 10
349.5 29.125 1 0 0 10 0 11
37231000088
379.5 31.625 0 0 0 11 0 11
418.5 34.875 0 0 0099
465 38.75 0 0 0 0 10 10
475.5 39.625 0 1 0 0 10 11
480 40 1 1 0 0 10 12
492 41 1 0 1 0 10 12
499.5 41.625 0 0 0 1 10 11
504 42 1 0 0 1 10 12
511.5 42.625 0 0 0 0 11 11
520.5 43.375 0 2 0 1 11 14
531 44.25 0 2 2 0 11 15
538.5 44.875 1 0 0 2 11 14
549 45.75 1 0 2 1 11 15
558 46.5 0 0 0 0 12 12
562.5 46.875 1 0 0 0 12 13
568.5 47.375 0 1 0 0 12 13
573 47.75 1 1 0 0 12 14
580.5 48.375 0 0 1 0 12 13
589.5 49.125 0 1 2 2 10 15
595.5 49.625 1 1 1 0 12 15
604.5 50.375 0 0 0 0 13 13
615 51.25 0 1 0 0 13 14
625.5 52.125 0 2 0 0 13 15
631.5 52.625 1 0 1 0 13 15
637.5 53.125 0 1 1 0 13 15
651 54.25 0 0 0 0 14 14
655.5 54.625 1 0 0 0 14 15
672 56 0 2 0 0 14 16
678 56.5 1 0 1 0 14 16
688.5 57.375 1 1 1 0 14 17
697.5 58.125 0 0 0 0 15 15
702 58.5 1 0 0 0 15 16
712.5 59.375 1 1 0 0 15 17
720 60 0 0 1 0 15 16
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