12FT Stainless Steel Braided Propane Hose Extension Assembly with 3/8" Female x 3/8" Male Flare for Gas Grill, RV Fire Pit The listed size 8" x

The listed size 8" x 4" is for the inside duct opening measurement

10 & ANSI Z21

PERFORMANCE SPECS- Outstanding range of chemical resistance

and common household chemicals

This register fits in a duct opening of 14”wide and 8”high

12FT Stainless Steel Braided Propane Hose Extension Assembly with 3/8" Female x 3/8" Male Flare for Gas Grill, RV Fire Pit The listed size 8" x12FT Propane Extension Hose Assembly with 3 8" female x 3 8" male flare fittings. Key Features: 304 stainless steel braided hose assemble with inner tubing made of flame resistant material and solid brass fittings for safety and durability standard 3 8" female x 3 8" male flare fittings Compliant with ANSI Z21. 54 CSA 8. 4 Working pressure 0 350PSIG Outdoor use only