16x25x4 Air & Furnace Filters

Find the right 16x25x4 air or furnace filter for your system. Explore available MERV ratings, brands and replacement formats, then check the details of the filter that fits your equipment. The 16x25x4 label is a nominal size, so actual dimensions and cabinet requirements can vary. For the best match, start with the filter or air-cleaner model already in your system and confirm the product dimensions, MERV rating and compatibility before ordering.

Find the right fit for your system. Filters sold as 16x25x4 can have different actual dimensions, depending on the product and the air-cleaner cabinet they are designed for. For example, the SpiroPure MERV 11 16x25x4 pleated filter measures 15.5 x 24.5 x 3.625 inches, while the VIVE TP-MAC11-1625-4RF, a replacement for the former TopTech TT-FM-1625, measures 15.375 x 24.375 x 3.75 inches. To choose the right filter, check the actual dimensions and, for cabinet-specific filters, confirm the replacement model or compatible air-cleaner cabinet before ordering.

Start with your current filter or system. Look for the filter, air-cleaner cabinet or replacement model number already installed whenever possible.

Check the actual dimensions on the product page and compare them with your existing filter and system requirements. Filters labeled 16x25x4 can differ in size.

Choose a MERV rating that meets your filtration needs and works with your HVAC or air-cleaner system. Check your equipment guidance before changing ratings.

Check the product type and brand. SpiroPure pleated filters and cabinet-specific brand replacements may have different fit and maintenance requirements.

Review the product page for replacement timing, pack quantity, return status, availability, current price and shipping details. Some filters are made to order, so check those details before placing your order.

Explore MERV 8 filters, MERV 11 filters, and MERV 13 filters, or shop all furnace filters. For help checking measurements, see our air filter sizing guide.