- Oval Pipe overlaps 13/8″ when joined together; therefore, assembled length
is 13/8″ less than the listed length
- Offers all the advantages of round pipe, and may be used for the following types of installation:
- 4″ Oval –
Conventional Type B
Type B-2×4 when used with firestop
Type BW-2×4 with recessed heater - 5″ Oval –
Type B
Type B-2×4
- 4″ Oval –
