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Glasfloss Air Filters

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With nearly 90 years of industry experience, Glasfloss manufactures some of the best commercial and industrial air filtration systems on the market. The company is committed to ensuring the highest quality of their products, short lead times, and the satisfaction of their customers. Whether you're looking for Glasfloss Z-Line filters, rigid cell filters, bag filters, or air cleaner replacement filters, make sure to contact the Gustave A. Larson Company. As one of the leading Glasfloss filter distributors in the U.S., we are your go-to choice if you want to provide your commercial or industrial customers with these cutting edge air filtration products.

Glasfloss: Long-standing air filtration experts

Since 1936, Glasfloss Industries has been fully dedicated to providing advanced air filters to industrial and commercial properties. In addition to continually improving their filtration technologies, Glasfloss is also known for their committed workforce, vast expertise, and building strong relationships with distributors in the industry. These long-lasting relationships are possible owing to the company’s dedication to manufacturing only quality products, high fulfilment rates, short lead times, and fantastic customer service. With the Larson Company at your service, you can discover the dependability and quality of Glasfloss air filters, whether you want to explore their pleated filter line or learn more about their medium and high-efficiency bag filters. Contact us now.

Glasfloss is known for: 

  • Short lead times: extremely short lead times are one of the key reasons why Glasfloss is known for lasting relationships with dealers and customers. 
  • Top-quality products: the line of air filtration products offered by Glasfloss is characterized by industry-leading quality, innovation, and efficiency.  
  • Vast industry experience. Ever since their early beginning in 1936, the Glasfloss HVAC filters have been some of the finest products on the market. 
  • Lasting relationships: As a company dedicated to customer satisfaction, Glasfloss maintains strong relationships with clients and distributors.

Partner with The Gustave A. Larson Company & Become a Glasfloss Contractor

If you join the expert team at The Larson Company, you can bring the excellence of Glasfloss filters to your customers and enjoy the following perks:

Making it Easy

Convenience is one of our priorities here at the Larson Company. Count on us to streamline each aspect of our service to meet your needs.

Setting a New Standard

We are a company dedicated to providing best quality products and promising growth opportunities to HVAC contractors.

For us, it’s personal

We boast a team of highly professional and committed experts who strive to maintain lasting relationships with all of our clients.


If you are looking for Glasfloss air filters, you can partner with the Larson Company in these locations:

  • Entire footprint

A full range of quality of air filters

Glasfloss manufactures a vast array of HVAC filters designed for commercial and industrial applications. Their air filtration product line includes a variety of pleated filters (Z-Line, MR-13 filters, and more), rigid cell filters, bag filters of medium and high efficiency, as well as high-quality air cleaner replacement filters. Glasfloss products come in a wide range of efficiency ratings, all offering high performance and dependability. If you are interested in thoroughly tested high-efficiency filters, the Larson Company is here to provide you with great partnership opportunities.

The great Glasfloss Z-Line filters

The Z-Line Series of pleated filters is designed to offer enhanced performance for virtually any commercial or industrial application. All Glasfloss Z-Line Filters are made with fibers that don’t absorb moisture and in turn don’t promote microbial growth. There are three main filter types in the Z-Line: ZL, HV, and MR, each offering great performance and value in various applications.The MERV ratings vary depending on the type of filter with the ZL and HV filters achieving a MERV 10 rating, and the MR-11 filters achieving a MERV 11 rating. Contact us to learn more about these filters.

Join us and bring the quality of Glasfloss filters to your customers

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Frequently Asked Questions

  • What are Glasfloss filters made of?

    Glasfloss offers a wide range of air filters for different applications. The exact materials the filters are made of will depend on the type of the filter and its application. For example, Glasfloss offers anything from pleated filters (Z-Line) to high-efficiency polyester bag filters. If you want to learn more, don’t hesitate to get in touch with the Larson Company.

  • How long do Glasfloss filters last?

    How often you replace Glasfloss filters may depend on several factors. These may include how often you use your HVAC unit, the air quality and humidity levels in your property, and other specifics of the application. In general, the pleated style or deep panel filters should be replaced every 2 to 3 months. However, many industrial and commercial applications allow for the monitoring of static pressure, which means that the filters can be replaced when they reach their final resistance rating.

  • What is a Glasfloss ZL filter?

    The Glasfloss Z-Line includes three high-performance filter types: ZL, HV, and MR filters. The ZL filters can achieve a MERV 10 rating per the ANSI/ASHRAE 52.2 Test Standard, and is designed to offer excellent value and performance for various commercial and industrial applications.

  • What are Glasfloss replacement filters?

    Glasfloss also offers the Z-Line Series of air cleaner replacement filters that provide a convenient alternative when replacing original filters. There are several replacement options available, including the Z-Line 700SG (Aprilaire®), 500AB *(Air Bear®), 400HW (Honeywell F-100®), HWR Series (Honeywell FC40R®), and 600GA (Amana® and Goodman®). All of these filters are manufactured with reliable MERV 10, 11, and 13 rated filtration media with a metal mesh backing to prevent sagging during filter operation.

  • How do I find dependable Glasfloss filter distributors near me?

    The Gustave A. Larson Company is your best choice if you’re interested in becoming a Glasfloss contractor for top-quality air filtration products. By partnering with us, you get to enjoy a wide range of success-boosting benefits, including our client-focused approach, streamlined services, and a wide range of heating, cooling, and refrigeration products, as well as a variety of quality HVAC parts and accessories. Our services are available across the Plains, Midwest, and Mountain States. Contact us now.