Product Brochure

www.vents-us 2023-07
BACKDRAFT DAMPERS
KOM U SERIES
BACKDRAFT DAMPERS
Tel: [phone]
Fax: [phone]
[e-mail]
VentsUS.com
400 Murray Rd,
Cincinnati, OH 45217
DESCRIPTION
KOM U spring-loaded backdraft damper is manufactured of 24/26 gauge
galvanized steel and contains rubber seal, it is especially designed to
prevent backdraft. KOM U also prevents the entry of birds and other wildlife.
Temperature range: up to +212 °F.
SUITABLE FOR
Bathroom / kitchen / apartments / cottages / small offices.
DIAGRAMS OF PRESSURE LOSS
DIMENSIONS STEEL GAUGE
Item Thickness [mm] Gauge
KOM U 100
0.5 26
KOM U 125 0.5 26
KOM U 150 0.7 24
KOM U 200 0.7 24
KOM U 250 0.7 24
KOM U 315 0.7 24
Model
Measurements [in.]
Ø D L
KOM U 100
4” 3
1/2
”
KOM U 125 5” 4
3/8
”
KOM U 150 6” 4
7/8
”
KOM U 200 8” 6
1/8
”
KOM U 250 10” 6
7/8
”
KOM U 315 12
3/8
” 7
7/8
”
0.400
0.350
0.300
0.400
0.250
0.200
0.150
0.100
0.050
0.000
0 200 600400 800 1000 1200 1400 1600
1 – KOM U 200
2 – KOM U 250
3 – KOM U 315
KOM U 200
KOM U 250
KOM U 315
1 2 3
0.400
0.350
0.300
0.400
0.250
0.200
0.150
0.100
0.050
0.000
050 100 150 200 250 300 350 400 450 500 550
1 – KOM U 100
2 – KOM U 125
3 – KOM U 150
KOM U 100
KOM U 125
KOM U 150
1 2 3
Air flow [CFM] Air flow [CFM]
Static pressure [in W.G.] Static pressure [in W.G.]