Dryer vent pipes, properly called vent ducts, come in a variety of materials. At above right our second dryer vent duct photo illustrates passage of the duct through the rim joist. By having a Periscope dryer vent ducts, you would be able to vent your dryer without the need to have a flexible ductwork. 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. Slim duct, sometimes called periscope duct or known by the brands Tite-Fit or Skinny Duct, is a telescoping rigid aluminum duct designed for transition ducting in tight spaces. Periscope-style dryer vent pipes are thin and inflexible, which offers two distinct benefits. Doing so will lead to moisture condensation on building surfaces, wet, damaged, moldy building insulation, wet building framing members, wall, floor or roof sheathing. It allows you to push the dryer very close to the wall. If you're working with a small area, then the diminutive Whirlpool 0-to-5 Inch … 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. 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. Find periscope dryer vents at Lowe's today. That 25-foot maximum length should be reduced by 2 1/2 feet for each 45 degree bend in the ducting, and by another five feet for each 90 degree bend in the vent duct. mobile home. (right) I stuck this guage’s right-angled terminal tube into a vertical section of the vent to measure static pressure. What's wrong with using this material at a clothes dryer? Whirlpool 4396037RP Vent Periscope – Slim Body. 4.0 out of 5 stars 591. Builder's Best - 10149 084149 SAF-T-DUCT Zero Periscope Adjustable Dryer Vent Periscope, Adjustable 0-5" Length. Do not vent the clothes dryer indoors nor into an attic, crawl space, or other enclosed area. Always use metal duct tape to secure the joints; don't use screws, because they catch lint. Foil duct is held in place with dryer clamps or large hose clamps. The flexible plastic (usually vinyl) duct is similar to aluminum foil duct but has a thin plastic wall rather than metal foil. It has a wide rectangular shape except for the two ends where it connects to the dryer and the vent outlet. 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. Some are flexible, and others are rigid. First, you get a technician with 48 inch arms, with a diameter of no more than 3 inches. Two other types: a box hood that is quite similar, and a louvered hood are also provided. But the variety of materials and duct prices can fool you into making a bad or even a dangerous choice. Questions & Answers on bathroom vent fan and fan ducting installation procedures, codes, standards. An exception to this length reduction for dryer vent elbows may be permitted for large-radius bend dryer vent products such as Dryer-Ell®. This duct section can be inspected and if necessary cleaned by removing the outside vent cover. or leaks into the structure. Transition ducts must not be concealed inside walls or other building cavities and usually have a maximum allowed length of eight feet. That's because a normal 4-inch 90-degree metal dryer vent elbow bends 90 degrees in a 4-inch radius while the Dryer-Ell product makes its bend over a more gradual 10-inch radius. 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. Do not vent clothes dryers directly into the attic space: you're only putting more moisture into an area where it is already going to be a problem, inviting mold growth on wood surfaces and hidden mold growth in building insulation. Guage ’ s right-angled terminal tube into a vertical section of the wall potentially catch fire and! Keep moisture and hot air out in a variety of materials 4 ] [ ]... 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