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0FS — Firestop Spacers

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

0FS — Firestop Spacers


Submittal Data (59 KB, PDF)

The firestop spacers center vent in 16" O.C. stud space and serve as a firestop at the ceiling level. This is a required component for Type B 2 x 4 and multi-story Type BW installations.

Available sizes (inches)

40FS4"2" x 4"
50FS5"2" x 4"
40FS-64"2" x 6"
50FS-65"2" x 6"
60FS6"2" x 6"