Glasfloss ZLPSP1C Pleated Air Filter 12x18x1

Product Description

The GLASFLOSS ZLPSP1C is a pleated air filter designed for residential and light commercial HVAC systems. Sized at 12 x 18 x 1 inch, it installs in the return air grille or filter rack of a forced-air heating or cooling system. The pleated media construction increases surface area compared to flat fiberglass panels, improving particulate capture efficiency without significantly restricting airflow. Licensed HVAC technicians and HVAC service professionals install and replace this filter as part of routine preventive maintenance.

This filter fits standard 12 x 18 x 1 inch filter slots found in residential air handlers, furnaces, and fan coil units. It is suited for applications where a direct-fit pleated replacement is needed in an existing 1-inch filter track. Its compact profile makes it a straightforward drop-in for equipment with that nominal opening size, requiring no modification to the cabinet or filter rack.

Key Features

• Pleated media design increases filtration surface area compared to flat-panel filters
• Nominal size of 12 x 18 x 1 inch fits standard return air filter slots
• 1-inch depth fits the most common residential filter track depth
• Drop-in replacement requiring no tools or hardware

Compatibility

Designed as an OEM-style replacement pleated air filter for residential and light commercial forced-air HVAC systems accepting a nominal 12 x 18 x 1 inch filter.

Installation Notes

Filter replacement is a routine maintenance task performed by licensed HVAC technicians or qualified service personnel. Always set the system thermostat to the off position and confirm the air handler fan has stopped before removing the old filter. Insert the new filter with the airflow direction arrow on the frame pointing toward the blower. Follow local codes and equipment manufacturer service intervals for filter replacement frequency.

Technical Specifications

• Filter Type: Pleated
• Nominal Length: 18 inches
• Nominal Width: 12 inches
• Nominal Depth: 1 inch

Standard Information

• Brand: GLASFLOSS
• Manufacturer Part Number: ZLPSP1C