English
中文
-
Introduction to the 3M Filtrete Brand
Filtrete draws on 3M filtration, separation, and purification technologies to offer household water-purification, air-purification, and eye-care lighting products.
-
Why Choose the Right MERV Rating for a 3M Filtrete Filter
A filter's MERV or MPR rating affects particle capture and airflow. Choosing the correct grade and replacing it regularly protects performance, efficiency, and furnace safety.
-
Why Choose 3M Filtrete™ Air Filters
3M Filtrete pleated furnace filters provide more surface area and longer life than flat filters, helping capture airborne particles without using fiberglass media.
-
Why Did the CR Box Become Popular Instead of Other Air Purifiers?
High airflow and low cost make CR Boxes attractive for crowded spaces. F8 filters keep replacement costs modest, while H13 filters make frequent replacement more expensive.
-
CR Box Noise Is a Significant Issue
Tests place most CR Boxes at about 67 dB. Lower fan speeds reduce noise but also reduce clean-air output, while larger fans and HEPA filters may help.
-
The Hidden Operating Costs of a CR Box
CR Boxes cost less to build than comparable air purifiers, but their relatively low energy efficiency can result in higher electricity costs during operation.
-
CR Boxes Have Lower Efficiency for Removing Virus-Laden Droplets
Basic CR Boxes use MERV 13 filters with lower single-pass efficiency than HEPA filters, but their strong airflow can remove airborne contaminants more quickly.
-
3M Scientists Confirm the Effectiveness of CR Boxes
3M Filtrete experts tested several CR Box designs and found strong CADR and cost-effectiveness, effective particle capture and improved whole-room ventilation.
Company landline
010-60770969
Sales Phone/WeChat: 15601000090
Purchasing Management/WeChat: 13331060986
Company Phone: 010-60770969
Address: Room 1708, Building B, Jinyu International Center, Longyu East 1st Road, Huilongguan Street, Changping District, Beijing
©2026 Kelan Filtration Technology(Beijing) Group Co., Ltd. All rights reserved
Record Number: Jing ICP No. 2022016037-2
Technical Support: Suyuan Network
Sales Phone/WeChat: 15601000090
Purchasing Management/WeChat: 13331060986
Company Phone: 010-60770969
Address: Room 1708, Building B, Jinyu International Center, Longyu East 1st Road, Huilongguan Street, Changping District, Beijing
©2026 Copyright Beijing Kelan Fresh Air Technology Co., Ltd. All rights reserved
Record Number: Jing ICP No. 2022016037-2
Technical Support: Suyuan Network
