DuraVent FasNSeal W2 4" x 5" 29-4C Stainless Steel Double Wall Stepped Increaser w7.9 If you are looking for

If you are looking for a great fire pit

Keeps the fire bowl free of leaves and other debris

On/Off Single Switch

25" Product Depth (in) 18

instead of a clay tile liner

DuraVent FasNSeal W2 4" x 5" 29-4C Stainless Steel Double Wall Stepped Increaser w7.9 If you are looking forFasNSeal W2 (double wall) vent lengths and components feature patented built in mechanical locking band and triple lipped directional gaskets. All pipes and components are engineered with smooth clean welds located 90 from mechanical locking bands. This construction feature allows for ease of installation. The air space between the inner and outer wall on FasNSeal W2 helps to reduce the clearance to combustibles in addition to creating a heat shield