---
product_id: 67244565
title: "Tamarack Air Transfer Grill, Off-White, 27 1/4in.W x 4 3/4in.H x 1 5/8in. Thick, Model# TTI-RAP-DI"
brand: "tamarack"
price: "₨41551"
currency: LKR
in_stock: true
reviews_count: 8
category: "Tamarack"
url: https://www.desertcart.lk/products/67244565-tamarack-air-transfer-grill-off-white-27-1-4in-w
store_origin: LK
region: Sri Lanka
---

# Energy-saving HVAC boost Efficient airflow balance Easy door installation kit Tamarack Air Transfer Grill, Off-White, 27 1/4in.W x 4 3/4in.H x 1 5/8in. Thick, Model# TTI-RAP-DI

**Brand:** tamarack
**Price:** ₨41551
**Availability:** ✅ In Stock

## Summary

> 🌬️ Balance your air, boost your comfort, and save smartly!

## Quick Answers

- **What is this?** Tamarack Air Transfer Grill, Off-White, 27 1/4in.W x 4 3/4in.H x 1 5/8in. Thick, Model# TTI-RAP-DI by tamarack
- **How much does it cost?** ₨41551 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/67244565-tamarack-air-transfer-grill-off-white-27-1-4in-w)

## Best For

- tamarack enthusiasts

## Why This Product

- Trusted tamarack brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Energy & Cost Saver:** Optimizes HVAC efficiency to reduce heating and cooling expenses while extending system life.
- • **BPI Certified Quality:** Backed by Better Performance Institute listing and lifetime warranty for peace of mind.
- • **Seamless Airflow Harmony:** Eliminates pressure imbalances for consistent room temps, even with doors closed.
- • **DIY-Friendly Installation:** Includes precise cutting template and screws for a hassle-free setup on standard hollow core doors.
- • **Durable & Discreet Design:** High-impact ABS plastic with internal baffle minimizes light and sound transmission.

## Overview

The Tamarack Air Transfer Grill is a sleek, off-white ABS plastic door vent designed to eliminate air pressure imbalances and improve HVAC efficiency. Measuring 27¼"W x 4¾"H x 1⅝" thick, it installs easily into 1⅜" thick hollow core doors using the included template and screws. Certified by the Better Performance Institute, it balances airflow to maintain even temperatures, reduce moisture, and lower energy costs, all while minimizing noise and light transfer. Durable and backed by a lifetime warranty, it’s the smart upgrade for modern homes seeking comfort and efficiency.

## Description

The Tamarack Air Transfer Grill is an economical, easy-to-install, energy-efficient door transfer grill that eliminates air pressure imbalances and improves air quality. Made of ABS plastic. Includes 2 screws and template for cutting door.

Review: Straightforward Installation & Effective; Short of Kicking, Should be Durable - I installed these vents on the doors of two bedrooms; my goal was faster pressure equalization and more even temperatures in these rooms. HVAC activation tended to pull these doors closed and the jamb of one door was coated with fine dust similar to that around my AC filters. Overall I'm pleased: they seem sturdy enough, there's little noticeable increase in sound or light transmission. Most importantly, the rooms now feel as warm as the rest of the house, even with doors closed. One great indicator during a recent teens/20s cold snap: my roommate stopped turning up the thermostat because his room felt cold, which in turn made the rest of the house too warm. ABS plastic is approx. 1/8" thick, which is reasonably thick for the intended purpose. Installed - with the cardboard insert in place - I found the vents to be sufficiently strong. You might have issues if household members push (kick?) open doors with their feet or there are furniture-chewing pets. Cardboard inserts have a grid of 1/2" equilateral triangles. I wasn't sure if they were factory treated for moisture, so I removed the inserts and sprayed several coats of satin spar urethane. (Inserts will be stiffer when dry, so scrunch them down a few times - they're springy - so they'll fit back in the vents.) The inserts are completely see-through when held up to light, but because they're installed at floor level, the noticeable light at eye-level is minimal. Rather than use the cutout pattern from the box, I used a Speed Square and straight edge to mark out a 4-1/8"H x 24-3/8" W rectangle, centered on the bottom edge of the door. Before cutting with a jigsaw, I drilled a double-set of 3/32" holes in one corner so I could insert the jigsaw blade for the long cut. Cuts were made ON the line. Installation Tips: Make sure your door is 1-3/8" thick AND wide enough to accommodate a 24.5" vent cutout! Ensure that your jigsaw blade will cut at least 1-3/8" deep; higher teeth counts = cleaner cuts. Be careful when cutting a hollow core door: the framing and veneer portions require more pressure than the veneer-only parts. Once you cut through framing and into veneer-only, the sudden drop in resistance could send the saw blade in an undesired direction if you're not careful. Reinforcement: you may or may not have to do this depending on how your door's internal construction. If, after cutting the vent section from a hollow core door, the long exposed edges are flimsy and unsupported, take the section you cut out, remove the veneer on either side, and install inside the door with contact cement, construction adhesive, etc. You may need to clamp & let bond before continuing. Inset enough so it doesn't protrude beyond the cut and interfere with vent installation. (I saw this tip in the 'Fine Homebuilding' website.) Painting: Some reviewers complain about paint not sticking. These vents are shiny ABS plastic, so if you decide to paint I highly recommend web research on something like "painting smooth ABS plastic" for preparation tips. Requirements usually include rinsing with dish detergent, surface roughening with fine-grit sandpaper, wiping down with wax/grease remover and top-coating with plastic-friendly paint.
Review: Works well to ventilate a room. Not heavy duty but it was easy to install and does its job - I like this product a lot. I have installed several return air pathways that go through walls, which help a lot in allowing the air conditioning to continue to work in rooms that have their doors closed. I bought this for a room where the studs are too close together and I have electrical and pluming issues where I would like to put a normal return air pathway. This door version is actually cheaper and probably easier to install. For this to be an easy project, you should have a jigsaw, but you could probably make it work with other tools if you were dedicated. If you are like my your doors are basically hollow with only thin walls. That makes them easy to cut and this fits right over the hole. Very little light and noise gets through and it looks pretty good installed. It makes a big difference in the air flow. This extends your door downward a quarter of an inch or so unless you chisel away some of the wood at the edges so it fits all the way in. That's what I did and it's a pain because my doors are made of very flimsy material. I ended up putting some caulk around it as well to act as a makeshift glue of sorts. In other words, because this attaches by only two screws at the bottom and because doors are made of really weak stuff, this isn't very securely attached if you don't also use some kind of glue. This is also made of plastic and cardboard. It wouldn't stand up well to being kicked or something. Just be aware of that when you are deciding which doors this is appropriate on. Having done both, I'd say cutting the door and using this is easier than cutting the drywall and making a hole in the wall for the other type of return air pathway. I recommend them both, but this is the easier and slightly cheaper option.

## Features

- QUALITY AIRFLOW – Save time, energy, and money with a Tamarack transfer grille. This user-friendly door vent eliminates air pressure imbalances in the home and increases your HVAC system’s efficiency. Most importantly, installing a Tamarack transfer grille is a simple way to improve the quality of the air you breathe.
- BALANCED AIR PRESSURE – Even with closed doors, the vent balances air pressure and prevents uneven room temperatures. The return air pathway decreases moisture in bathrooms and preserves energy throughout any building or home. The balance ensures that the inside temperature, humidity, air quality, and energy consumption levels stay right where you want them.
- COST-EFFICIENT – Great for Closed Appliance Zones, this vent extends the life of any HVAC system. Saving money on cooling and heating is a breeze with a Tamarack Return Air Pathway. Plus, this item is BPI Listed by the Better Performance Institute.
- LONG-LASTING – Made with durable, high-impact ABS plastic, this vent is covered by a lifetime manufacturer's warranty. While air flows freely between rooms, the internal baffle material prevents any increased transmission of light and sound through the vent/grille.
- EASY DOOR INSTALLATION – No need to install crossover or jump ducts with this convenient in-door vent. The kit includes a template for cutting exact unit measurements. This model is made for 1 ⅜ inch thick hollow core doors.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Tamarack |
| Color | Can be painted over. |
| Cooling Power | 12000 British Thermal Units |
| Product Dimensions | 1.63"D x 27.25"W x 4.75"H |
| Refrigerant | R-32 |
| Special Feature | Pressure Imbalance Elimination, Durable High-Impact Plastic, No Moving Parts |

## Product Details

- **Brand:** Tamarack
- **Color:** Can be painted over.
- **Cooling Power:** 12000 British Thermal Units
- **Form Factor:** Split System
- **Model Name:** TTi-RAP-Di
- **Power Source:** Corded Electric
- **Product Dimensions:** 1.63"D x 27.25"W x 4.75"H
- **Refrigerant:** R-32
- **Special Feature:** Pressure Imbalance Elimination, Durable High-Impact Plastic, No Moving Parts
- **Warranty Type:** Full

## Images

![Tamarack Air Transfer Grill, Off-White, 27 1/4in.W x 4 3/4in.H x 1 5/8in. Thick, Model# TTI-RAP-DI - Image 1](https://m.media-amazon.com/images/I/71b5YMoTDVL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Will this fit a 1 1/4 thick door?**
A: I would think it  should , however,  you would  to accept a protrusion of 1/8"  on one side or 1/16"  on both sides.

**Q: Will this fit 1 3/4 thick door?**
A: No, it only fits a 1 3/8 thick door.

**Q: Will it fit a 1 6/8 thick door?**
A: Hi There, thanks for reaching out regarding this product! This model is made for 1 ⅜ inch thick hollow core door.

**Q: Will it work for a 1 1/2 inch door?**
A: It will not work for that size door.  We do have a line of Wall Return Air Pathways that might work for you.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Straightforward Installation & Effective; Short of Kicking, Should be Durable
*by G***H on January 22, 2024*

I installed these vents on the doors of two bedrooms; my goal was faster pressure equalization and more even temperatures in these rooms. HVAC activation tended to pull these doors closed and the jamb of one door was coated with fine dust similar to that around my AC filters. Overall I'm pleased: they seem sturdy enough, there's little noticeable increase in sound or light transmission. Most importantly, the rooms now feel as warm as the rest of the house, even with doors closed. One great indicator during a recent teens/20s cold snap: my roommate stopped turning up the thermostat because his room felt cold, which in turn made the rest of the house too warm. ABS plastic is approx. 1/8" thick, which is reasonably thick for the intended purpose. Installed - with the cardboard insert in place - I found the vents to be sufficiently strong. You might have issues if household members push (kick?) open doors with their feet or there are furniture-chewing pets. Cardboard inserts have a grid of 1/2" equilateral triangles. I wasn't sure if they were factory treated for moisture, so I removed the inserts and sprayed several coats of satin spar urethane. (Inserts will be stiffer when dry, so scrunch them down a few times - they're springy - so they'll fit back in the vents.) The inserts are completely see-through when held up to light, but because they're installed at floor level, the noticeable light at eye-level is minimal. Rather than use the cutout pattern from the box, I used a Speed Square and straight edge to mark out a 4-1/8"H x 24-3/8" W rectangle, centered on the bottom edge of the door. Before cutting with a jigsaw, I drilled a double-set of 3/32" holes in one corner so I could insert the jigsaw blade for the long cut. Cuts were made ON the line. Installation Tips: Make sure your door is 1-3/8" thick AND wide enough to accommodate a 24.5" vent cutout! Ensure that your jigsaw blade will cut at least 1-3/8" deep; higher teeth counts = cleaner cuts. Be careful when cutting a hollow core door: the framing and veneer portions require more pressure than the veneer-only parts. Once you cut through framing and into veneer-only, the sudden drop in resistance could send the saw blade in an undesired direction if you're not careful. Reinforcement: you may or may not have to do this depending on how your door's internal construction. If, after cutting the vent section from a hollow core door, the long exposed edges are flimsy and unsupported, take the section you cut out, remove the veneer on either side, and install inside the door with contact cement, construction adhesive, etc. You may need to clamp & let bond before continuing. Inset enough so it doesn't protrude beyond the cut and interfere with vent installation. (I saw this tip in the 'Fine Homebuilding' website.) Painting: Some reviewers complain about paint not sticking. These vents are shiny ABS plastic, so if you decide to paint I highly recommend web research on something like "painting smooth ABS plastic" for preparation tips. Requirements usually include rinsing with dish detergent, surface roughening with fine-grit sandpaper, wiping down with wax/grease remover and top-coating with plastic-friendly paint.

### ⭐⭐⭐⭐⭐ Works well to ventilate a room. Not heavy duty but it was easy to install and does its job
*by J***2 on June 25, 2018*

I like this product a lot. I have installed several return air pathways that go through walls, which help a lot in allowing the air conditioning to continue to work in rooms that have their doors closed. I bought this for a room where the studs are too close together and I have electrical and pluming issues where I would like to put a normal return air pathway. This door version is actually cheaper and probably easier to install. For this to be an easy project, you should have a jigsaw, but you could probably make it work with other tools if you were dedicated. If you are like my your doors are basically hollow with only thin walls. That makes them easy to cut and this fits right over the hole. Very little light and noise gets through and it looks pretty good installed. It makes a big difference in the air flow. This extends your door downward a quarter of an inch or so unless you chisel away some of the wood at the edges so it fits all the way in. That's what I did and it's a pain because my doors are made of very flimsy material. I ended up putting some caulk around it as well to act as a makeshift glue of sorts. In other words, because this attaches by only two screws at the bottom and because doors are made of really weak stuff, this isn't very securely attached if you don't also use some kind of glue. This is also made of plastic and cardboard. It wouldn't stand up well to being kicked or something. Just be aware of that when you are deciding which doors this is appropriate on. Having done both, I'd say cutting the door and using this is easier than cutting the drywall and making a hole in the wall for the other type of return air pathway. I recommend them both, but this is the easier and slightly cheaper option.

### ⭐⭐⭐⭐ 2 on one door? I did
*by S***T on July 24, 2021*

Works great. 4 stars because I feel it costs more than it should. Still cheaper than other options though. I was able to use 2 on one door. The bottom was easy, but for the top.. I had to buy a chisel and trim away part of the door jamb/stop so it would fit when closed. But why 2? I have floor air vents. It’s summer. Cold air comes from the vents. Hot air rises, cold air sinks. With only the bottom door vent, mainly cold air is leaving the room. Would be great for winter, but not for summer. So I put 2 on the door top/bottom for all seasons. I can verify, it works so much better with 2 instead of just one. (I had only 1 on for a couple days before adding a second.) Light/Privacy: I can’t see any light coming through the vents unless I’m looking directly straight at it and an eye level, and even then it’s not much light coming through. I don’t even see how someone can even notice the cardboard enough to complain about it. Theres also not much difference with passing through noise and sound. However, i have a studio.. so I need to figure out some soundproofing. The plastic isn’t as cheap as others have made it seem like. It feels durable. But you shouldn’t try to kick it or have your dogs/cats play with it. Thin plastic is still thin plastic. I will now be making a DIY vent cover to stick on the bottom vent for summer, and to stick on the top vent for winter for further airflow testing. Good product. Cheap (all things considered). But it should still be cheaper. It’s plastic and cardboard.

## Frequently Bought Together

- Tamarack Air Transfer Grill, Off-White, 27 1/4in.W x 4 3/4in.H x 1 5/8in. Thick, Model# TTI-RAP-DI
- Suprocky Wall Return Air Pathway with Eco-Friendly PP Filter and Aluminum Grille (14"x 6" Retrofit), Upgraded Fins, Odor Free, Durable, AP1406 Matte White Zone Air Pathway, Fits Sidewalls

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-04*