QF In Line Back Draft Damper

Used to reduce backward air flow in the line.

Designed for use in a horizontal line. Specify if vertical operation is required.

Not an explosion isolation device.

• Available in Galvanized and 304SS (as shown below) or optional 316SS or carbon steel
• Available with flanged ends in diameters up to 34", and other various end types
• Optional 16 gauge

Contact Nordfab or your local Nordfab dealer for assistance with larger sizes and material / gauge options.

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Download our In Line Back Draft Damper Product Data sheet

If you need flanged connections or larger sizes than those shown below, please see our Flanged In Line Back Draft Damper product page

ø A in Material T mm Length (in) Weight (lbs) Legacy Item No. Item No.
3 Galv 18ga 3219-0300-100000‍ 8010002122‍
4 Galv 18ga 3219-0400-100000‍ 8010002123‍
5 Galv 18ga 3219-0500-100000‍ 8010002124‍
6 Galv 18ga 3219-0600-100000‍ 8010002125‍
7 Galv 18ga 3219-0700-100000‍ 8010002126‍
8 Galv 18ga 3219-0800-100000‍ 8010002127‍
9 Galv 18ga 3219-0900-100000‍ 8010002128‍
10 Galv 18ga 3219-1000-100000‍ 8010002112‍
11 Galv 18ga 3219-1100-100000‍ 8010002113‍
12 Galv 18ga 3219-1200-100000‍ 8010002114‍
13 Galv 18ga 3219-1300-100000‍ 8010002115‍
14 Galv 18ga 3219-1400-100000‍ 8010002116‍
15 Galv 18ga 3219-1500-100000‍ 8010002117‍
16 Galv 18ga 3219-1600-100000‍ 8010002118‍
17 Galv 18ga 3219-1700-100000‍ 8010002119‍
18 Galv 18ga 3219-1800-100000‍ 8010002120‍
19 Galv 18ga 3219-1900-100000‍ 8010002121‍
20 Galv 16ga 3219-2000-100000‍ 8010002102‍
21 Galv 16ga 3219-2100-100000‍ 8010002103‍
22 Galv 16ga 3219-2200-100000‍ 8010002104‍
23 Galv 16ga 3219-2300-100000‍ 8010002105‍
24 Galv 16ga 3219-2400-100000‍ 8010002106‍
3 304SS 18ga 3219-0300-200000‍ 8010002095‍
4 304SS 18ga 3219-0400-200000‍ 8010002096‍
5 304SS 18ga 3219-0500-200000‍ 8010002097‍
6 304SS 18ga 3219-0600-200000‍ 8010002098‍
7 304SS 18ga 3219-0700-200000‍ 8010002099‍
8 304SS 18ga 3219-0800-200000‍ 8010002100‍
9 304SS 18ga 3219-0900-200000‍ 8010002101‍
10 304SS 18ga 3219-1000-200000‍ 8010002085‍
11 304SS 18ga 3219-1100-200000‍ 8010002086‍
12 304SS 18ga 3219-1200-200000‍ 8010002087‍
13 304SS 18ga 3219-1300-200000‍ 8010002088‍
14 304SS 18ga 3219-1400-200000‍ 8010002089‍
15 304SS 18ga 3219-1500-200000‍ 8010002090‍
16 304SS 18ga 3219-1600-200000‍ 8010002091‍
17 304SS 18ga 3219-1700-200000‍ 8010002092‍
18 304SS 18ga 3219-1800-200000‍ 8010002093‍
19 304SS 18ga 3219-1900-200000‍ 8010002094‍
20 304SS 16ga 3219-2000-200000‍ 8010002075‍
21 304SS 16ga 3219-2100-200000‍ 8010002076‍
22 304SS 16ga 3219-2200-200000‍ 8010002077‍
23 304SS 16ga 3219-2300-200000‍ 8010002078‍
24 304SS 16ga 3219-2400-200000‍ 8010002079‍

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