Getting a dryer vent periscope would be actually a better tool to have in your home rather than a duct hose which may be made out of plastic and not metal. Although we have observed this material widely used in homes as "dryer vent ducting" it should not be used for that purpose.Cranor elaborates: "Plastic" dryer duct" sold at various suppliers does not say on the packaging that it can be used for clothes dryer ducts....it specifically says bathroom venting. Plastic duct is the least-safe option, and you will not find a listed product made of this material. Complete kit with all parts necessary to vent your dryer. Here are other clothes dryer vent materials we have encountered: Watch out: Use rigid or semi-rigid metal dryer vent material [we recommend rigid metal dryer vent ducting]: Virtually all independent authorities, including the US CPSC, Underwriters Laboratories, and the Association of Home Appliance Manufacturers, and experienced home inspectors such as Cranor all recommend the use of rigid or semi-rigid metal ducting for clothes dryer exhaust venting. Click to Show or Hide Citations & References, CLOTHES DRYER VENT TERMINATION & SCREENS, CLOTHES DRYER VENT CLEARANCES & TERMINATION, CLOTHES DRYER LINT CLOG RESISTANT SCREENS, HOME INSPECTION EDUCATION COURESES (Canada), HOME INSPECTION EDUCATION: HOME STUDY COURSES. Dryer vents are often made from flexible plastic or metal duct, which may be easily kinked or crushed where they exit the dryer and enter the wall or floor. The rigid metal duct is the only suitable duct material for concealed duct installations; that is, the portion of the duct run inside walls, floors, or other areas where the duct is not fully visible. Keep all connections tight and avoid air leaks. That duct caused the dryer to stick out about 6 1/2 inches from the wall. Install a secure, self-closing screened exhaust vent cover  - the vent hood, outside the building at the end of the clothes dryer vent line in order to prevent rodents or birds from entering the ductwork. Above: I'm checking a two-louver dryer wall vent hood that is somewhat resistant to lint clogging. FREE Shipping on orders over $25 shipped by Amazon. mobile home. Periscope dryer vent ducts allow you to vent the dryer without flexible ductwork. Building codes often specify "listed" or "L and L" (listed and labeled) duct for all new installations. On the other side of the wall in the photo shown above a periscope type connection adapted the dryer outlet to the through-wall vent. But the variety of materials and duct prices can fool you into making a bad or even a dangerous choice. It allows you to push the dryer very close to the wall. Whirlpool 0-to-5 Inch. Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia. Most slim ducts can be adjusted from about 27 inches to about 48 inches in length. Transition ducts must not be concealed inside walls or other building cavities and usually have a maximum allowed length of eight feet. The dryer vent joints are secured with foil tape. Foil duct can accordion from about 1 to 8 feet, which is usually enough for most installations. Here are the most common dryer duct materials used to install a dryer vent. The periscope dryer vent duct is also suitable for usage in small areas and it also comes with a solid vent duct that is capable of being extended whenever it is necessary if you want to connect the dryer’s exhaust to your outside vent. 4.0 out of 5 stars 534. As the lint accumulates, it can constitute a fire hazard. - (Whirlpool 2012), Above and below: Do's and Dont's of clothes dryer exhaust venting routing as suggested by GE and cited in DRYER INSTALLATION MANUALS, Now found at DRYER INSTALLATION & OPERATION MANUALS. Clothes dryer exhaust vent installation codes & specifications: How to install a clothes dryer exhaust vent: choosing materials, routing vent ducting, dryer vent duct connections, dryer vent termination at an exterior wall. Model codes permit use of large-radius dryer vent elbows: Section M1502.6 of the 2006 International Residential Code, Section 504.6.4 of the 2009 International Mechanical Code, Section M1502.4 of the 2009 International Residential Code, Section 504.6.4 of the 2012 International Mechanical Code and Section M1502.4 of the 2012 International Residential Code all permit large radius elbows. 2” x 6” periscope that will extend 41” and can be cut down to 8” Quick connect will allow dryer to fit as close as 2” to 3” from wall using no hose. Inventory is sold and received continuously throughout the day; therefore, the quantity shown may not be available when you get to the store. The vent provides better air flow than a partly-squashed flexible duct dryer vent, and it resists crushing, therefore it's safer. I want a periscope dryer vent. So we reviewed, best dryer vent hose for tight space. Watch out: we have found serious and chronic lint clogging of louvered dryer exhaust vent hoods IF the hood uses multiple louvers that are small in width. It has a wide rectangular shape except for the two ends where it connects to the dryer and the vent outlet. The preferred or most-recommended dryer vent routing is shown above, adapted from Whirlpool dryer vent instructions cited in detail below. Try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly. Note: appearance of your Comment below may be delayed: if your comment contains an image, web link, or text that looks to the software as if it might be a web link, your posting will appear after it has been approved by a moderator. Along with trash, debris, and other water entry sources, this crawl space was a moldy mess that had led to wet building insulation, mold contamination, and damage to the structure. It allows you to push the dryer very close to the wall. We have no relationship with advertisers, products, or services discussed at this website. CLOTHES DRYER VENT INSTALLATION at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice. If you add 8 inches for each end it would be 30 inches. An exception to this length reduction for dryer vent elbows may be permitted for large-radius bend dryer vent products such as Dryer-Ell®. sloppy bending flexduct runs significantly reduce the performance of the vent fan. Also, dryers may come with the manufacturer’s specifications for ducting to use with a particular model. Although semi-rigid metal duct is often stronger and has a smoother interior (catches less lint) than foil duct, it is more common to find listed foil duct than listed semi-rigid. Get daily tips and tricks for making your best home. Vinyl duct, and in some situations all flexible duct, is not allowed by building codes. It is also adaptable to vertical, horizontal, and diagonal installations. $15.50 $ 15. The minimum clearance to the rear wall for this type of clothes dryer vent is 2 1/2". A periscope dryer vent let the dryer sit closer to the wall, and the smooth metal collects less dryer lint than a flexible dryer hose. Find Aluminum periscope dryer vents at Lowe's today. It is made from flexible foil so it can be folded up when it is not in use to save space. At above right our second dryer vent duct photo illustrates passage of the duct through the rim joist. Whirlpool 4396037RP Vent Periscope – Slim Body. The Spruce uses cookies to provide you with a great user experience and for our, Installing an Over-the-Range Microwave Oven With Vent Fan, Routine Dryer Vent Maintenance Can Prevent Fires, How to Install a Dryer Vent in a Tight Space, Some Easy-To-Use Tips That Will Reduce Basement Condensation, How to Disconnect, Move, and Install a Clothes Dryer, How to Reduce and Remove Lint From Clothes and Upholstery, How to Clean Your Dryer Vent and Reduce Fire Risk. It has a flexible body just 18 inches long. or leaks into the structure. Double-check to make sure that this type is approved for your dryer and allowed by local code. Foil duct is held in place with dryer clamps or large hose clamps. Our photo below illustrates a typical clothes dryer periscope vent that permits the back of the dryer to be placed closer to the wall than would be possible with round dryer vent ducting. The bottom line is, don't use it. Aaron Stickley is a licensed plumber with first-hand knowledge in solving home plumbing problems. The vent shown can be used on clothes dryers made by Admiral, Amana, Caloric, Crosley, Estate, Inglis, Jenn-Air, KitchenAid, Roper, Vesta, and Whirlpool. If the space behind the dryer was any less than the minimal amount required for a periscope vent it would not be possible to get to the clamps. In some areas where winter air is very dry homeowners may choose to temporarily spill dryer vent air directly into the building interior in order to try to raise the indoor humidity level. Our photo below illustrates a typical clothes dryer periscope vent that permits the back of the dryer to be placed closer to the wall than would be possible with round dryer vent ducting. It is not safe, not durable, and not effective. Maximum clothes dryer duct length & number of bends or elbows: Keep the vent duct sections as short, straight, and directly routed to the building exterior as you possibly can. An acceptable alternative that is nearly as effective is semi-rigid metal duct work, though we have found that that material is easily dented, crushed, or damaged. We include a list of clothes dryer fire safety hazards and other clothes dryer installation or maintenance mistakes that are either unsafe or that interfere with effective, economical dryer operation. This dryer vent is designed for safe indoor venting and can be used when it is not possible to use outdoor ventilation for your dryer. A dryer vent periscope can come in handy for connecting the two. Watch out: some manufacturers recommend against using sheet metal screws to secure dryer duct sections because the screws collect lint. Seal the periscope vent using a spray foam sealant and your new venting set up should hold and keep moisture and hot air out. Also see CLOTHES DRYER VENT TERMINATION & SCREENS. plastic ties, or second best, duct tape. As the dryer is operating, the lint, moisture, and heat are vented into the bucket. FREE Shipping on orders over $25 shipped by Amazon. Dryer Vent Hood - Through-the-wall gas or electric dryer tube and vent hood with a removable bird and rodent guard. Periscope-style dryer vent pipes are thin and inflexible, which offers two distinct benefits. Louvered self-closing internal damper keeps out drafts and provides efficient dryer airflow. This hazard has resulted in numerous house fires. Slope the clothes dryer vent duct downwards towards its building exit - this will avoid condensation accumulating inside the ductwork and dripping back into the building ceilings or insulation.It's fine for the dryer vent to rise vertically to enter the building ceiling, but within the ceiling the vent should slope downwards towards its exit point at the building exterior wall.The same design should be applied to dryer vents that turn down to exit the building below a floor and/or through a basement or crawl space ceiling. It measures 22 inches from the top of the dryer exhaust to the bottom of the wall vent. This is especially critical in long dryer runs through ceilings and walls where the risk of blockage and fire would be increased. Metal ducts, having a smooth interior surface provide these advantages when used on clothes dryer systems: Above: an angled clothes dryer exhaust vent hood. U.S.D. Most clothes dryer exhaust vent installations use 4" diameter vent piping, the minimum-allowed. When it comes to measuring out your vent then it won’t actually be that you need a lot of room to install the periscope … Also we explain and illustrate problems that result from improper dryer vent installation design, materials, routing, and filtering including dryer vent clogging, clothes dryer fire hazards, building moisture and mold problems, and increased clothes dryer operating costs due to poor or blocked dryer vents.