Noise transmission was more difficult to assess with a radio playing in the bedroom. I had to lay down and look directly through the baffles to see light inside the room. The only light I saw in the darkened hallway was reflected around the door jambs and beneath door from the polished Skimstone concrete floor. The honeycomb baffle does an excellent job limiting light transmission. Standing outside the bedroom with the door closed and the AC running, I feel a steady breeze through the door vent against my hand. The Tamarack door return vent made a big difference in air circulation when the door is closed! The room is now comfortable without the stuffy feeling. Set the door on the hinges, close the door and insert the hinge pins: Tamarack Perfect Balance In-Door Return Air Pathway Performance Hanging the lightweight interior door back on the hinges was quick and easy. The in-door return vent installation is complete: Don’t overtighten the screws to avoid tearing out the wood: Tamarack Perfect Balance In-Door Return Air Pathway – Fasten with Screws Rummaging through my workshop I found that 1-5/8 inch long by 8 gauge coarse thread drywall screws had the right head size and fit perfectly:ĭrive a screw in the vent mounting flange on both sides to fasten it to the door. The Tamarack vent is secured to the bottom door frame with two bugle head screws (screws are not included). The Tamarack in-door vent is tapped into the door cutout. These interior hollow-core doors cost less than $40 pre-bored for the door knob so it’s not a disaster in the unlikely event you make a blunder and have to replace the door. Remember to remove any burrs from the sawn edges (I just run my fingers along the edge) and vacuum the sawdust inside and out: I sawed the left side first, moved over to the right side making an interior radius at the right corner to cut across the middle, then trimmed the corner radius to square it: I used a down-cut fine toothed laminate blade in my DEWALT DW331K jig saw which has a plastic non-marring plastic shoe cover. Trace over the pencil marks with a felt tip pen for better visibility in the photo:Ī jig saw is needed make the vent cutout in the door.Mark the top horizontal line between the left and right sides using an aluminum yard stick.Used the square to measure and mark the left and right sides 4-3/16 inches high at a right angle to the door bottom.Verify the total length between the left and right marks is 24-7/8 inches.Measure and mark the left and right sides at 12-7/32 inches from the door center tick mark ġ2-7/8 in = 24-7/8 in vent length divided by 2.Note the actual door width is 31-3/4 inches, therefore the center mark is made at 15-7/8 inches. Measure and make a tick mark at the center of the door bottom (15-7/8 inches) on this nominal 32 inch wide hollow-core interior door using a pencil.Instead of using the template I preferred measuring the actual width (24-1/4 inches) and height (4 inches) of the inner frame, then added 3/16 inches to each measurement for clearance, or 24-7/8 inches by 4-3/16 inches respectively. I found the cardboard template to be oversized which benefits the novice installer. Cut out the template, mark and saw: Measure Cutout by Hand The Tamarack vent installation instructions are printed on back of the box with a full size template. I put a painters drop cloth over the saw horses to avoid marring the door finish but bath towels will do. Remove the door from it’s hinges by driving out the hinge pins and lay the door on a pair of saw horses. How to Install a Tamarack Perfect Balance In-Door Return Air Pathway Also see the Tamarack Perfect Balance In-Door Return Air Pathway Review for the project introduction. Shipping within the continental U.S.This project shows how to Install a Tamarack Perfect Balance In-Door Return Air Pathway in a hollow core interior door to pressure balance the room. Measure door first before ordering!įor quantity discounts, please contact us-800.222.5932. Color: White.Ģ4 1/2″ width X 4″ height rough opening, fits a 1-3/8″ thick door with a minimum width of 30″. Masonite International tested and approved the Perfect Balance ® for use in their “Safe N’ Sound Interior Door”ĭurable ABS plastic (paintable) and interior baffle to mitigate noise and light. Made in the USA with durable ABS plastic material. This will Improve the effectiveness of the bathroom fan increasing the fan’s ability to remove moisture and help prevent the build-up of mildew. The best place to install this product is in the bathroom door. This is an economical solution to improve air pressure imbalances in the home and allow your heating and cooling system to perform more efficiently. A template is provided to make cutting to exact measurements simple. The Perfect Balance In-Door Return Air Pathway is easy to install in 1 3/8″ thick hollow core doors.
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