Timloc 9x3 Inch Cavity Wall Extendable Sleeve – Gas Heating Vent With Air Brick & Cowl Options

Need to sort out ventilation for your gas appliance?

This Timloc cavity wall sleeve is exactly what you’re looking for.

It’s a brand new, extendable sleeve that fits a standard 9x3 inch opening, making it super versatile for different wall thicknesses.

You can pair it with an air brick or cowl to finish the job (check out the options!).

Built solid and ready to install, this is the kind of gear that makes a DIY project feel legit.

No weird country of origin info to worry about—just a quality part from Timloc that does what it’s supposed to do.