--- product_id: 631450528 title: "POWERTEC 70145 4-Inch to 3-Inch Reducer" brand: "powertec" price: "β‚±2531" currency: PHP in_stock: true reviews_count: 5 url: https://www.desertcart.ph/products/631450528-powertec-70145-4-inch-to-3-inch-reducer store_origin: PH region: Philippines --- # Optimizes airflow velocity 4-inch to 3-inch precise fit Heavy-duty ABS plastic durability POWERTEC 70145 4-Inch to 3-Inch Reducer **Brand:** powertec **Price:** β‚±2531 **Availability:** βœ… In Stock ## Summary > πŸ”— Connect with Confidence β€” Upgrade Your Dust Collection Game! ## Quick Answers - **What is this?** POWERTEC 70145 4-Inch to 3-Inch Reducer by powertec - **How much does it cost?** β‚±2531 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/631450528-powertec-70145-4-inch-to-3-inch-reducer) ## Best For - powertec enthusiasts ## Why This Product - Trusted powertec brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built to Last:** Crafted from premium ABS plastic to resist abrasion, rust, and clamp pressure in demanding workshops. - β€’ **Compact & Lightweight:** Weighing just 95g with precise dimensions, it integrates without bulk or hassle. - β€’ **Universal Compatibility:** Fits inside most 3-inch dust collection hoses and standard 4-inch flexible hoses with ease. - β€’ **Seamless Size Transition:** Effortlessly connect 4-inch hoses to 3-inch ducts for versatile dust collection setups. - β€’ **Enhanced Airflow Efficiency:** Tapered port design boosts air velocity exactly where your dust collector needs it most. ## Overview The POWERTEC 70145 4-Inch to 3-Inch Reducer is a robust dust collection adapter designed to seamlessly connect 4-inch outer diameter hoses to 3-inch inner diameter ducts. Made from heavy-duty ABS plastic, it ensures long-lasting durability against abrasive workshop dust and clamp pressure. Its tapered port enhances airflow velocity near machines, optimizing dust extraction efficiency. Lightweight and compact, this reducer is a must-have for professional-grade dust collection setups. ## Description This dust collection fitting allows you to connect a 3-inch ID opening to 4-inch flexible hose and/or transition a 3-inch ID opening to 4-inch ID standard hose. It’s easy to use and offers a secure, quick attachment to your dust collector hose. It’s ideal for increasing air velocity near the machine where it's needed most. Additionally, it features a tapered port on one side that fits inside most 3" dust collection hose. Heavy Duty Quality We make our reducers utilizing premium ABS plastic material, which provides long-term durability with resistance to rust and corrosion. It’s thick walls are intended to stand up to hose clamp pressure and the abrasive nature of woodworking and workshop dust collection. Specifications Color: Black Material: ABS Plastic 4-Inch Nominal End Measures: 3-15/16-inch outer diameter by 3-45/56-inch inner diameter 3-Inch Nominal End Measures: 2-63/64-inch outer diameter by 2-23/32-inch inner diameter POWERTEC is a leading manufacturer of high quality wood work accessories, sanding discs and an assortment of OEM replacement parts. We are committed to exceeding expectations, while bringing the latest innovations, technology, and product development to the industry. ## Features - INCLUDES: 4 inch to 3 inch dust collection reducer (1pc) - FUNCTION: This dust collector attachment possesses a 4-inch OD end that connects to standard 4-inch ID dust collection hose and allows you to step down to a 3 inch dust collection hose or line branch. Note: to connect to other 4” OD ports or adapters, a 4”flex cuff, POWERTEC 70149, will be needed. - EASY TO USE: Offers a 4” OD profile with tapered port on one side, fits inside most 3" dust collection hose - PREMIUM QUALITY: Made with heavy duty ABS plastic material for long-term durability and made to withstand the abrasive nature of woodworking and workshop dust collection - DIMENSIONS: 4-Inch o.d nominal end | 3-Inch o.d nominal end - Connect 3-Inch opening duct to 4-Inch flexible hose - Transition 3-Inch duct to 4-Inch standard hose - Tough, durable ABS plastic material - 4-Inch nominal end measures 3-15/16-Inch O.D. and 3-45/56-Inch I.D. - 3-Inch nominal end measures 2-63/64-Inch O.D. and 2-23/32-Inch I.D. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B00M3IT378 | | Best Sellers Rank | #333,569 in Garden & Outdoors (See Top 100 in Garden & Outdoors) #2,738 in Hose Parts & Connectors | | Brand Name | POWERTEC | | Colour | 4" to 3" Reducer | | Connector Type | Reducer | | Customer Reviews | 4.5 4.5 out of 5 stars (887) 4.5 out of 5 stars | | Exterior Finish | ABS | | Global Trade Identification Number | 00736815005960 | | Included Components | 4-Inch to 3-Inch Reducer | | Item Dimensions | 10.5 x 10.5 x 8.7 Centimeters | | Item Type Name | POWERTEC 70145 4-Inch to 3-Inch Reducer | | Item Weight | 95 g | | Manufacturer | Southern Technology LLC | | Manufacturer Part Number | 70145 | | Material Type | ABS plastic | | Model Number | 70145 | | Number Of Packs | 1 | | Number Of Pieces | 1 | | Size | 1 Count (Pack of 1) | | Thread Size | 3 inches | | Thread Type | Metric Tapered | | Unit Count | 1.0 Count | | Upc | 736815005960 | ## Product Details - **Brand:** POWERTEC - **Colour:** 4" to 3" Reducer - **Connector Type:** Reducer - **Exterior Finish:** ABS - **Item Weight:** 95 g - **Item dimensions L x W x H:** 10.5 x 10.5 x 8.7 Centimeters - **Material:** ABS plastic - **Size:** 1 Count (Pack of 1) - **Thread Size:** 3 inches - **Thread Type:** Metric Tapered ## Images ![POWERTEC 70145 4-Inch to 3-Inch Reducer - Image 1](https://m.media-amazon.com/images/I/51bbjT1EtkS.jpg) ![POWERTEC 70145 4-Inch to 3-Inch Reducer - Image 2](https://m.media-amazon.com/images/I/41zEYb3yAqS.jpg) ![POWERTEC 70145 4-Inch to 3-Inch Reducer - Image 3](https://m.media-amazon.com/images/I/41iXZ-YmcjS.jpg) ![POWERTEC 70145 4-Inch to 3-Inch Reducer - Image 4](https://m.media-amazon.com/images/I/61hnLXivRMS.jpg) ![POWERTEC 70145 4-Inch to 3-Inch Reducer - Image 5](https://m.media-amazon.com/images/I/61gYZ7L-3CS.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: What is the ID of the 3inch side?** A: I bought this for my grizzly shaper with a 3" dust port. the 3" end is the same OD as the shaper. What I had to buy was a 3" x 6" piece of dust collector hose. I think Rockler sells it. Good luck. **Q: I need a 2.75 Outer diameter to 4”.. will this fitting work?** A: Read the specs carefully. It is designed to connect 4" to 3" dia hose. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works well. *by on Reviewed in the United States 12 August 2026* As described; works well. ### ⭐⭐⭐⭐⭐ Good deal *by on Reviewed in Canada 17 January 2026* Works and fits. Priced fair ### ⭐⭐⭐⭐⭐ Great accessory for the Diesel Heaters *by on Reviewed in the United States 11 February 2025* Got a diesel heater with 3" output and balking at the price of 3" vent extensions? 4" is the universal cheap clothes dryer output and vent extensions of any length are available dirt cheap in that size. So what do you do. You get one of those guys for couple of bucks and free yourself to use that ubiquitous ducting.Sure, it would be nice if they used 4" off the hop, but when the design was stolen all those years ago, it must have used a 3" output, so the chinese clones use a 3" output today. This won't flow more air, nor will it restrict, but it will open up a myriad of cheaper options for routing heat. Does that job perfectly and I will get one for each heater. ## Frequently Bought Together - POWERTEC 70145 4-Inch to 3-Inch Reducer - Daisypower Dryer Vent Window Kit, Adjustable Window Vent Kit with Outdoor Dryer Vent Cover,4 Inch Hood for Exhaust Ventilation - VIVOSUN D4 4 Inch 195 CFM Inline Duct Ventilation Fan HVAC Vent Blower for Hydroponics Grow Tent --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ph/products/631450528-powertec-70145-4-inch-to-3-inch-reducer](https://www.desertcart.ph/products/631450528-powertec-70145-4-inch-to-3-inch-reducer) --- *Product available on Desertcart Philippines* *Store origin: PH* *Last updated: 2026-09-03*