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EF/RF/F — Flashings

How to Specify

Using tables from the National Fuel Gas Code or our Sizing & Application Guide, determine the diameter of venting required. The Sizing & Application Guide also offers tips on good design including multi-appliance system sizing and design. The System Design and Installation Guide is an additional resource.

Amerivent FAQs

EF/RF/F — Flashings

Flashing - Standard The standard flashing fits flat to 5/12 pitch roof, and is made of double-seamed construction for protection from leakage. For a standard flashing with a 6" skirt, the Model No. reads the size and EFFU or RFFU.

Flashing - Steep Pitch The flashing with a steep pitch fits 6/12 to 12/12 pitch roofs.

Flashing - Tall Cone The flashing with a tall cone fits flat to 1/12 roofs, and is used on flat roofs in snowpacked areas to reduce pressure.

Available sizes (inches)

Standard Model6" Skirt ModelSteep Pitch ModelTall Cone ModelSize
3EF3EFFU3EF123EFT3"
4EF4EFFU4EF124EFT4"
5EF5EFFU5EF125EFT5"
6EF6EFFU6EF126EFT6"
7RF3RFFU7RF127RFT7"
8RF8RFFU8RF128RFT8"
9RF9RFFU-9RFT9"
10RF10RFFU-10RFT10"
12RF12RFFU-12RFT12"
14F14RFFU-14FT14"
16F--16FT16"
18F--18FT18"
20F--20FT20"
22F--22FT22"
24F--24FT24"
26F--26FT26"
28F--28FT28"
30F--30FT30"