Does the problem with sticker placement still exist?

No. Product identification stickers are easy peel removable labels. Labels can be removed with little effort.

Would this be the appropriate calculator for flex ducting? It says round but I don't know if that's metal or flex.

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.

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Air Duct Sizing Calculator

Product ID: 63878322

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Details

Brand
HVACCHARTS
Calculator Type
Air Duct
Material
Other
Power Source
Battery
Screen Size
4 Inches

📏Dual-sided precision scales

📐Comprehensive HVAC reference data

🛠️Durable, water-resistant build

Description

📏 Calculate like a pro, duct with confidence!

COMPACT POWER TOOL - Slim 4" x 8.5" size fits perfectly in your tool belt or bag—ready whenever you are.
MASTER YOUR AIRFLOW - Supports equal friction and velocity reduction methods to optimize supply and return duct systems.
BUILT TO LAST ON THE JOB - Crafted from thick, water-resistant paper with reinforced edges and rivets to withstand daily wear.
ALL IN ONE HVAC COMPANION - Includes velocity recommendations, sheet metal gauges, and pressure drop charts for instant reference.
PRECISION AT YOUR FINGERTIPS - Dual-sided design with duct sizing scales and essential HVAC charts for flawless calculations.

The Air Duct Sizing Calculator is a compact, dual-sided HVAC tool designed for precise duct system measurements using equal friction or velocity reduction methods. Built with durable, water-resistant materials and reinforced edges, it offers essential reference charts and formulas, making it an indispensable portable companion for HVAC professionals.

Specifications

ASIN	B006XIQ7DM
Best Sellers Rank	#57,105 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,872 in HVAC
Customer Reviews	4.6 4.6 out of 5 stars (937)
Date First Available	January 14, 2012
Is Discontinued By Manufacturer	No
Item Weight	0.95 ounces
Item model number	9W-7LPQ-JTV2
Manufacturer	DEFLECTAIR
Product Dimensions	4 x 8.5 x 0.04 inches

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¥4582

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Trustpilot

TrustScore 4.5 | 7,300+ reviews