Freeman's Guide To Core Vents
Part 2 of 2: Freeman's Line of Core Vents

All of the following core vents are available in various diameters. Each title and picture is linked to the respective product pages.

 

Premium Core Vents

43% opening rate versus 13% or 30%
self cleaning

one piece construction
very hard metal alloy
self-cleaning

Slotted Core Vents

Type D, Slotted - Brass Body

.010 & .014 slot widths
.093 head thickness

 

Type C, Slotted - Steel Body

.010, .014, .020 slot widths
.031 & .093 head thickness

Type T, Taper Slot - Brass Body

slot width varies due to taper
head thickness varies due to taper

Type S, Slotted - Brass Body

.014 slot width
.031 head thickness

Type XD, Slotted - Brass Body

.010 & .014 slot widths
.156 head thickness

Type XD, Slotted - Steel Body

.014 & .020 slot widths
.156 head thickness

Type AD, Slotted - Aluminum

.010 & .014 slot widths
~.082, .093, & .156 head thickness

Coated, Slotted - Aluminum

.014 slot width
.093 head thickness

 

Screen Core Vents

Type K, Screen - Brass Body

24, 30, 35, 40, & 50 Mesh

(also available in steel)

Type G, Screen - Brass Body

60, & 70 Mesh

 

Special Core Vents

 

Type B, Perforated - Brass Body

.016 x .120 pierced slots

Type PM, Porous Metal- Brass Body

.046 Wall & .156 Head

Vilsum Nylon Metric Vents

durable, non-stick
0.4mm Slot Width