All Vulcan Vents are categorized below by typical application.
- Install Vulcan Vents in numerous construction materials: Wood (FF), Stucco (S) as well as with Mil Core (SMC) and Foam Back (FB), Fiber Cement (FC), and more
- Cutout sizes available here
- Custom applications and copper are also available upon request
Quick reference guide:
Continuous vents are made for superior circulation, and allows relatively cool air to enter the attic when used in conjunction with dormers and gables.
Quick reference as well as more pics and info for continuous vents here
Dormers (much like gables) offer large areas of ventilation in a vertical orientation and are best when used as high up as possible on the roof. Climate considerations should be taken into account when considering dormers.
Eaves are the overhanging ledges of a roof and are usually diagonal. Our eaves use a ‘drop in’ style with wings that can be adjusted to your material and cut out size, and are horizontally oriented.
Foundation vents are vertically oriented and are important for allowing the crawlspace or basement to ventilate out moisture to prevent rot from setting in.
Gables, like dormers, are vertically oriented vents best placed as high as possible. When used in conjunction with lower soffit or eave vents, rapid cooling and venting of the attic can take place.
For when re-installing vents is impractical but you still want to fire proof your attic, you need Vulcan Retrofits.
Soffit vents are the horizontally oriented vents that are placed in the under side of the soffit which typically vent the attic. Continuous vents are soffit vents but not all soffits are continuous, and are rectangular.
Our model numbers (with some exceptions) all end with one or two letters which specify the flange type and thus the material the vent is meant to be installed in.
What does a “FF” suffix mean?
“FF” designates ‘Flange Face’ a frame designed where the flange is on the Face. This model is used for wood structures in most cases. These vents can be cut in after the siding is installed.
What does a “S” suffix mean?
“S” designates stands for stucco siding. With a flange that is 3/4″ recessed back so that when the vent is installed, the stucco application will be flush with the front of the vent.
What does a “FB” suffix mean?
“FB” designates ‘Foam Back’, AKA frame designed for Stucco with foam. it has a flange recessed 1 1/2″ back so that when the vent is installed, the stucco-foam application will be flush with the front of the vent.
What does a “FM” suffix mean?
“FM” designates ‘Flange Middle’ a frame designed for various sidings. It has a flange recessed 1 5/16″ back so that when the vent is installed the front of the vent will be flush with the matched siding.
What does a “FC” suffix mean?
“FC” stands for ‘Fiber Cement’ which is made for- you guessed it- Fiber Cement. It has a flange recessed 3/8″ back so that when the vent is installed the front of the vent will be flush with the fiber cement board.
What does a “SMC” suffix mean?
“SMC” designates ‘Stucco Mil-Core’, a frame designed for Stucco with a Mil-Core edge on the face. It has a flange recessed 3/4″ back so that when the vent is installed the front of the vent will be flush with the Stucco MilCore edge.
What does a “R” suffix mean?
“R” designates ‘Retrofit’ a frame designed for various sidings. It has a flange recessed 2 5/8″ back so that when the vent is installed the front of the vent will be flush with the existing siding.
What does a “RT” suffix mean?
“RT” designates ‘Reverse Tab’ a frame designed with reverse tabs for eaves.
See below for actual hole sizes needed to fit Vulcan Vents. Expect as much as a .25″ tolerance range.
|SKU||Cutout size in inches||Cutout size in cm|
|VDLR419||4 X 19||10.16 x 48.26|
|VDR1224||12 round||30.48 round|
|VDR918||9 round||22.86 round|
|VE3514FB||3.5 X 14||8.89 X 35.56|
|VE3514FC||3.5 X 14||8.89 X 35.56|
|VE3514FF||3.5 X 14||8.89 X 35.56|
|VE3514RT||fits 2 X 4 fire blocking with 16″ on center rafters||fits 5.08 X 10.16 fire blocking with 40.64 on center rafters|
|VE3514S||3.5 X 14||8.89 X 35.56|
|VE3514SMC||3.5 X 14||8.89 X 35.56|
|VE3522FB||3.5 X 22||8.89 X 55.88|
|VE3522FC||3.5 X 22||8.89 X 55.88|
|VE3522FF||3.5 X 22||8.89 X 55.88|
|VE3522FM||3.5 X 22||8.89 X 55.88|
|VE3522RT||3.5 X 22||8.89 X 55.88|
|VE3522S||3.5 X 22||8.89 X 55.88|
|VE3522SMC||3.5 X 22||8.89 X 55.88|
|VE5514FB||5.5 X 14||13.97 X 35.56|
|VE5514FC||5.5 X 14||13.97 X 35.56|
|VE5514FF||5.5 X 14||13.97 X 35.56|
|VE5514FM||5.5 X 14||13.97 X 35.56|
|VE5514RT||fits 2 X 6 fire blocking with 16″ on center rafters||fits 5.08 X 15.24 fire blocking with 40.64 on center rafters|
|VE5514S||5.5 X 14||13.97 X 35.56|
|VE5514SMC||5.5 X 14||13.97 X 35.56|
|VE5522FB||5.5 X 22||13.97 X 55.88|
|VE5522FC||5.5 X 22||13.97 X 55.88|
|VE5522FF||5.5 X 22||13.97 X 55.88|
|VE5522FM||5.5 X 22||13.97 X 55.88|
|VE5522RT||fits 2 X 6 fire blocking with 24″ on center rafters||fits 5.08 X 15.24 fire blocking with 40.64 on center rafters|
|VE5522S||5.5 X 22||13.97 X 55.88|
|VE5522SMC||5.5 X 22||13.97 X 55.88|
|VE7514FB||7.5 X 14||19.05 X 35.56|
|VE7514FC||7.5 X 14||19.05 X 35.56|
|VE7514FF||7.5 X 14||19.05 X 35.56|
|VE7514RT||7.5 X 14||19.05 X 35.56|
|VE7514S||7.5 X 14||19.05 X 35.56|
|VE7514SMC||7.5 X 14||19.05 X 35.56|
|VE7522FB||7.5 X 22||19.05 X 35.56|
|VE7522FC||7.5 X 22||19.05 X 35.56|
|VE7522FF||7.5 X 22||19.05 X 35.56|
|VE7522FM||7.5 X 22||19.05 X 35.56|
|VE7522RT||7.5 X 22||19.05 X 35.56|
|VE7522S||7.5 X 22||19.05 X 35.56|
|VE7522SMC||7.5 X 22||19.05 X 35.56|
|VER2||2″ hole round||5.08cm hole round|
|VER2M||2″ hole round||5.08cm hole round|
|VER3||3″ hole round||7.62cm hole round|
|VER3M||3″ hole round||7.62cm hole round|
|VER4||4″ hole round||10.16cm hole round|
|VER4M||4″ hole round||10.16cm hole round|
|VER6M||6″ hole round||15.24cm hole round|
|VFS414FB||3.5 X 13.5||8.89 X 34.29|
|VFS414FC||3.5 X 13.5||8.89 X 34.29|
|VFS414FF||3.5 X 13.5||8.89 X 34.29|
|VFS414FM||3.5 X 13.5||8.89 X 34.29|
|VFS414R||3.5 X 13.5||8.89 X 34.29|
|VFS414S||3.5 X 13.5||8.89 X 34.29|
|VFS414SMC||3.5 X 13.5||8.89 X 34.29|
|VFS614FB||5.5 X 13.5||13.97 X 34.29|
|VFS614FC||5.5 X 13.5||13.97 X 34.29|
|VFS614FF||5.5 X 13.5||13.97 X 34.29|
|VFS614FM||5.5 X 13.5||13.97 X 34.29|
|VFS614R||5.5 X 13.5||13.97 X 34.29|
|VFS614S||5.5 X 13.5||13.97 X 34.29|
|VFS614SMC||5.5 X 13.5||13.97 X 34.29|
|VFS814FB||7.5 X 13.5||19.05 X 34.29|
|VFS814FC||7.5 X 13.5||19.05 X 34.29|
|VFS814FF||7.5 X 13.5||19.05 X 34.29|
|VFS814FM||7.5 X 13.5||19.05 X 34.29|
|VFS814R||7.5 X 13.5||19.05 X 34.29|
|VFS814S||7.5 X 13.5||19.05 X 34.29|
|VFS814SMC||7.5 X 13.5||19.05 X 34.29|
|VG1224FF||12 X 23.5||30.48 X 59.69|
|VG1412FB||14 X 12||35.56 X 30.48|
|VG1412FC||14 X 12||35.56 X 30.48|
|VG1412FF||14 X 12||35.56 X 30.48|
|VG1412FM||14 X 12||35.56 X 30.48|
|VG1412R||14 X 12||35.56 X 30.48|
|VG1412S||14 X 12||35.56 X 30.48|
|VG1412SMC||14 X 12||35.56 X 30.48|
|VG1418FB||14 X 17.5||35.56 X 44.45|
|VG1418FC||14 X17.5||35.56 X 44.45|
|VG1418FF||14 X17.5||35.56 X 44.45|
|VG1418FM||14 X17.5||35.56 X 44.45|
|VG1418R||14 X 17.5||35.56 X 44.45|
|VG1418S||14 X17.5||35.56 X 44.45|
|VG1418SMC||14 X17.5||35.56 X 44.45|
|VG1424FB||14 X 23.5||35.56 X 58.42|
|VG1424FC||14 X 23.5||35.56 X 58.42|
|VG1424FF||14 X 23.5||35.56 X 58.42|
|VG1424FM||14 X 23.5||35.56 X 58.42|
|VG1424R||14 X 23.5||35.56 X 58.42|
|VG1424S||14 X 23.5||35.56 X 58.42|
|VG1424SMC||14 X 23.5||35.56 X 58.42|
|VG148FB||14 X 7.5||35.56 X 19.75|
|VG148FC||14 X 7.5||35.56 X 19.75|
|VG148FF||14 X 7.5||35.56 X 19.75|
|VG148FM||14 X 7.5||35.56 X 19.75|
|VG148R||14 X 7.5||35.56 X 19.75|
|VG148S||14 X 7.5||35.56 X 19.75|
|VG148SMC||14 X 7.5||35.56 X 19.75|
|VSB1212||13 X 13||33.02 X 33.02|
|VSB8585||10 X 10||25.4 X 25.2|
|VSC2120||2 X cut to length||5.08cm X cut to length|
|VSC2120RF||2” X cut to length||5.08cm X cut to length|
|VSC2120SMC||2” X cut to length||5.08cm X cut to length|
|VSC25120||2.5” X cut to length||6.35cm X cut to length|
|VSC25120SMC||2.5” X cut to length||6.35cm X cut to length|
|VSC3120||3” X cut to length||7.62cm X cut to length|
|VSC3120RF||3” X cut to length||7.62cm X cut to length|
|VSC3120SMC||3” X cut to length||7.62cm X cut to length|
|VSC4120||4” X cut to length||10.16cm X cut to length|
|VSC4120SMC||4” X cut to length||10.16cm X cut to length|
|VSC5120||5” X cut to length||12.7cm X cut to length|
|VSC5120SMC||5” X cut to length||12.7cm X cut to length|
|VSC6120||6” X cut to length||15.24cm X cut to length|
|VSC6120SMC||6” X cut to length||15.24cm X cut to length|
|VSF7519||8 X 20||20.32 X 50.8|