---
product_id: 266345517
title: "(Calculator) - Air Duct Sizing Calculator"
brand: "hvac charts"
price: "RM168"
currency: MYR
in_stock: true
url: https://www.desertcart.com.my/products/266345517-calculator-air-duct-sizing-calculator
store_origin: MY
region: Malaysia
---

# Water-resistant durable build Dual-sided precision scales Compact, tool-belt ready size (Calculator) - Air Duct Sizing Calculator

**Brand:** hvac charts
**Price:** RM168
**Availability:** ✅ In Stock

## Summary

> 📐 Size it right, size it fast — your HVAC edge on the go!

## Quick Answers

- **What is this?** (Calculator) - Air Duct Sizing Calculator by hvac charts
- **How much does it cost?** RM168 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/266345517-calculator-air-duct-sizing-calculator)

## Best For

- hvac charts enthusiasts

## Why This Product

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

## Key Features

- • **Portable Powerhouse:** Slim 4x8.5 inch size fits seamlessly into your tool belt or bag for instant on-site calculations
- • **Built to Last on the Job:** Thick, water-resistant paper with reinforced edges and rivets withstands tough HVAC environments
- • **All-in-One HVAC Reference:** Includes fitting equivalents, pressure charts, formulas, and recommended duct velocities in one compact tool
- • **Designed for the HVAC Pro:** Optimized for equal friction and velocity reduction methods, ensuring industry-standard accuracy every time
- • **Precision at Your Fingertips:** Dual-sided design with friction, velocity, and pressure drop scales for exact duct sizing

## Overview

The Air Duct Sizing Calculator by HVAC Charts is a compact, dual-sided sliding calculator designed for HVAC professionals to size supply and return duct systems accurately using equal friction or velocity reduction methods. Made from durable, water-resistant paper with reinforced edges, it features scales for duct sizes, pressure drop charts, fitting equivalents, and essential HVAC formulas. Measuring just 4 by 8.5 inches and weighing 27 grams, it fits easily into tool belts, making it an indispensable portable reference for on-site duct design and verification.

## Description

(Calculator) - Air Duct Sizing Calculator

## Features

- Versatile HVAC Calculator: Sizes supply and return duct systems using equal friction or velocity reduction design method
- Dual-Sided Design: Front features scales for various duct sizes and properties, while the back offers fitting equivalents, pressure drop charts, and HVAC formulas
- Durable Construction: Made of thick, water-resistant paper stock with glued edges and corner rivets for long-lasting use
- Practical Reference Guide: Includes recommended duct velocities, gauges for sheet metal, and other essential HVAC data
- Compact and Portable: Measures 4 inches high and 8.5 inches wide, fitting easily into tool belts or bags for on-the-go use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | HVAC Charts |
| Manufacturer | Nash Enterprise |
| Model | 9W-7LPQ-JTV2 |
| Product Dimensions | 10.16 x 21.59 x 0.1 cm; 27 g |
| Item model number | 9W-7LPQ-JTV2 |
| Compiler | HVACcharts |
| Standing screen display size | 4 Inches |
| Display Type | Physical |
| Power Source | Battery Powered |
| Batteries Included | No |
| Batteries Required | No |
| Adapter | HVACcharts |
| Reader | HVACcharts |
| Material | Other |
| Marimba | HVACcharts |
| Recorder | HVACcharts |
| Transcriber | HVACcharts |
| Manufacturer | Nash Enterprise |
| Country of Origin | USA |
| Item Weight | 27 g |

## Product Details

- **Brand:** HVAC Charts
- **Colour:** Calculator
- **Calculator Type:** Engineering/Scientific
- **Power Source:** Battery Powered
- **Screen Size:** 4 Inches

## Images

![(Calculator) - Air Duct Sizing Calculator - Image 1](https://m.media-amazon.com/images/I/915Uh0HFT8L.jpg)
![(Calculator) - Air Duct Sizing Calculator - Image 2](https://m.media-amazon.com/images/I/915Uh0HFT8L.jpg)

## Questions & Answers

**Q: Does the problem with sticker placement still exist?**
A: No.  Product identification stickers are easy peel removable labels.  Labels can be removed with little effort.

**Q: Would this be the appropriate calculator for flex ducting? It says round but I don't know if that's metal or flex.**
A: This calculator is not for flex ducting.  Flex ducting has a different friction loss and varies by manufacturer so there is no universal calculator that works for all flex ducting.

## Frequently Bought Together

- Air Duct Sizing Calculator
- REVISED AND UPDATED! HVAC Tables, Equations & Rules of Thumb Quick-Card
- Trane TD1 Ductulator with Sleeve, Duct Sizing Calculator

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**Shop now:** [https://www.desertcart.com.my/products/266345517-calculator-air-duct-sizing-calculator](https://www.desertcart.com.my/products/266345517-calculator-air-duct-sizing-calculator)

---

*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-01-23*