Inventory is sold and received continuously throughout the day; therefore, the quantity shown may not be available when you get to the store. Photos courtesy of Eric Galow, Galow Homes. Complete details about clothes dryer exhaust vent installation are provided below in this article at CLOTHES DRYER VENT INSTALLATION DETAILS. Underneath the floor, you’ll need to install another periscope dryer vent facing the opposite direction as the one above-head connected to the dryer. We discuss types of dryer vent ducting and dryer vent doors or opening protection devices. I found a “periscope” dryer vent that has a 2in width to it when inserted into the dryer. The flexible plastic (usually vinyl) duct is similar to aluminum foil duct but has a thin plastic wall rather than metal foil. But the variety of materials and duct prices can fool you into making a bad or even a dangerous choice. 4.0 out of 5 stars 534. 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. The best way to ensure a duct is safe for your installation is to look for a product that is listed, or certified, by a national testing laboratory, such as UL (Underwriters Laboratories). However the installation instructions and recommendations from the individual clothes dryer manufacturer are the final authority on how the dryer should be installed. 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. 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. If the dryer vent is blocked, the dryer operates at higher temperatures. Plastic duct is not a UL approved dryer duct material, not code approved and its use will void any dryer manufacturer warranty." Some dryer manufacturers permit installations with dryer exhaust venting of much greater lengths [though perhaps combined with a requirement to avoid use of 90 degree turns in the duct system]. Irrespective of the type of dryer vents, they are all made with the intention of using it for dryers. The minimum clearance to the rear wall for this type of clothes dryer vent is 2 1/2". This duct section can be inspected and if necessary cleaned by removing the outside vent cover. The preferred or most-recommended dryer vent routing is shown above, adapted from Whirlpool dryer vent instructions cited in detail below. Here is part one of an Almetal Dryer Vent Periscope installation. This reference & research material has moved to CLOTHES DRYER FIRE RESEARCH. And we prefer rigid, solid metal dryer vent ducting wherever possible. Aaron Stickley is a licensed plumber with first-hand knowledge in solving home plumbing problems. It measures 22 inches from the top of the dryer exhaust to the bottom of the wall vent. The through-roof vent approach gives us another roof penetration, a possible leak spot, and it almost assures that condensing moisture will drip down the vent duct and into the building ceiling. What's wrong with using this material at a clothes dryer? Get it as soon as Wed, Nov 18. 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. 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. Semi-rigid metal (usually aluminum) duct is flexible and similar to foil ducting but quite a bit more rigid. Periscope dryer vents are usually telescoping in length and sold in ranges such as 0-18" tall, or longer. The vent shown can be used on clothes dryers made by Admiral, Amana, Caloric, Crosley, Estate, Inglis, Jenn-Air, KitchenAid, Roper, Vesta, and Whirlpool. I had 3 Geek Squad installers for the new washer and dryer (separate trips for various reasons) and none of them recommended the periscope vent kit. Seal the periscope vent using a spray foam sealant and your new venting set up should hold and keep moisture and hot air out. 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. 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. 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. For optimum clothes dryer venting we use 4" or larger galvanized metal duct sections and elbows, though aluminum is also acceptable in most locations.Flexible clothes dryer is easy to install, avoids having to mess with elbows in the duct system, and is inexpensive, but that material restricts air flow and may sag, giving you areas that This article series describes good practices for clothes dryer vent installation, lint traps, wall vents, filters, and screens. 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. Foil duct is held in place with dryer clamps or large hose clamps. Clothes dryer exhaust duct material choices that you are likely to find at building supply stores include the materials listed below, and illustrated throughout this article. Builder's Best - 10149 084149 SAF-T-DUCT Zero Periscope Adjustable Dryer Vent Periscope, Adjustable 0-5" Length. Second connect the Like I said before I have one behind my dryer and it is very difficult to reach behind the dryer to tighten the clamps on the dryer and pipe that sticks out of the wall. Do not use regular plastic duct tape because it dries out and deteriorates.