A thimble is designed to allow Class A chimney pipe to pass through the wall, run into the room where your appliance is installed, and then connect to the stove pipe. Class A pipe that has 8" O.D., 7" Thimble is made for 7" I.D. Depending on what kind of stove pipe you use, the Class A chimney pipe must come into the room six inches (for connecting to double-wall stove pipe… Shop DuraVent Black and Silver Wall Thimble for 3-in Pellet Vent in the Wood & Pellet Stove Accessories department at Lowe's.com. Refer to the instructions for installing the thimble. Make a 3½ inch thick wall made of bricks against any combustible wall to which you want to pass the stove pipe… Can I: 1. It's the box surrounding the insulated thimble that has the R30 insulation. Diameters: 6" Thimble is made for 6" I.D. Some have a wall thimble that installs in the wall instead of inside and outside collars. Inventory is sold and received continuously throughout the … Class A pipe that has 9" O.D, 8" Thimble is made for 8" I.D. Take that number and multiply by 3 and use that to determine the stove pipe’s clearance from the wall. Class A pipe … This piece allows the venting system to pass from the interior to the exterior through an existing wall… All the sections of stove-pipe going up, the thimble, the stove-pipe outside, the storm collar flashing thing, and 'top-hat' all together cost me less than $200. I do not want to spend the $2000+ dollars on stainless steel double walled stovepipe set up. Step 3 - Make a Wall. Back when I … Heat-Fab Insulated Saf-T Thimble For 5" And 6" Diameter Stovepipe - The UL Listed Thimble allows single-wall stovepipe to pass through a combustible wall. I am installing a Regency woodstove in my basement, there is an existing hearth and hearth floor there and an eight inch thimble going into (18 inches deep) a masonry chimney, the stove has a six inch outlet and I'm installing 6 inch stainless steel flex pipe … Our ceiling is at 14'. Our chimney products include liner insert stove pipe boots, chimney liner parts, offset insert adaptors, hearth rugs, high temp silicone, wood stove catalytic, wood stove wall thimbles, mantel heat shields, … The two sections telescope to accommodate 6" to 11" wall thickness. ... How to Install a Pellet Stove Pipe Through a Wall. For example, if the pipe’s diameter is 8 inches then the clearance should be 24 inches. Use single walled pipe going through an 8 wall thimble … Please Note: Prices, promotions, styles and availability may vary by store and online. It touches the thimble but there is 2" of mineral wool type Thermafiber Safing Insulation in the thimble against the double wall pipe going through the wall… I will be having the 6 stove pipe go through the wall and then outside to a section of single wall stovepipe for a chimney. It attaches to the chimney therefore avoiding … Supervent® 6" ID Black Class A Double Wall Thimble.