Is "round duct" flex duct or rigid spiral duct?

This calculator is for rigid duct only, so the proper answer is rigid.

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📐 Elevate your airflow game with precision and style!

DUAL SCALE MASTERY - Seamlessly switch between imperial and metric units for global-ready duct sizing.
ULTRA LIGHT PORTABLE - At just 86g and slim profile, carry precision duct calculations anywhere with ease.
ASHRAE RECOMMENDED DESIGN - Built-in airflow velocity guidelines ensure industry-standard accuracy every time.
VIBRANT MULTICOLOR CODING - Quickly identify measurements with intuitive red, green, blue, and more hues—no guesswork needed.
LIGHT TRANSMITTING PROTECTIVE SLEEVE - Durable, translucent cover safeguards your tool while keeping readings crystal clear.

The Trane TD1 Sleeve-Equipped Duct Size Calculator is a lightweight, battery-powered plastic tool featuring dual imperial and metric scales, a multicolor design for easy reading, and a translucent protective sleeve designed to meet ASHRAE airflow velocity standards—perfect for HVAC professionals seeking accuracy and portability.

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Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

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Fantastic and great service. Shipping was faster than expected.

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Brand	Trane
Model Number	TD1
Product Dimensions	26.04 x 22.23 x 0.33 cm; 86.18 g
Color	red
Material	Plastic
Power Source	Battery Powered
Are Batteries Included	No
Item Weight	86.2 g

Trane TD1 スリーブ付きダクトサイズ計算機

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