---
product_id: 40492072
title: "12x20x1 Merv 11 Furnace Filter (12 Pack)"
brand: "glasfloss"
price: "R1874"
currency: ZAR
in_stock: true
url: https://www.desertcart.co.za/products/40492072-12x20x1-merv-11-furnace-filter-12-pack
store_origin: ZA
region: South Africa
---

# 12x20x1 Merv 11 Furnace Filter (12 Pack)

**Brand:** glasfloss
**Price:** R1874
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** 12x20x1 Merv 11 Furnace Filter (12 Pack) by glasfloss
- **How much does it cost?** R1874 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/40492072-12x20x1-merv-11-furnace-filter-12-pack)

## Best For

- glasfloss enthusiasts

## Why This Product

- Trusted glasfloss brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

The Glasfloss Z-Line Series pleated filters offer improved performance for virtually every application. All Glasfloss Z-Line pleated filters feature fibers which do not absorb moisture and will not support microbial growth. The Glasfloss Z-Line Series MR-11 filters achieve a MERV 11 rating per the ANSI/ASHRAE 52.2 Test Standard. The Z-Line Series MR-11 pleat is available in many standard face dimensions in 1", 2", 4", and 6" depths. Glasfloss Z-Line Series pleated filters incorporate media which is laminated to a galvanized metal that stabilizes the media during operation. The pleats are formed in a radial configuration to ensure proper dust-loading. The standard pleated cartridge is bonded into a two-piece heavy-duty beverage board diecut frame that creates a double-wall thickness around the filter and prevents air bypass. The die-cut grilles are internally bonded to the pleat apexes on the air-entry and air-exit sides to ensure maximum integrity and support during the life of the filter. Glasfloss Z-Line Series pleated filters are used in a broad range of installations, from pre-filters to primary filters for computer room units. Whether used as primary filters or as pre-filters in multi-stage systems, Glasfloss Z-Line Series pleated filters offer a solution for virtually every residential, commercial, and industrial HVAC application.

## Features

- Nominal Filter Size 12 x 20 x 1
- Actual Filter Size 11.5" x 19.5" x .875"
- Merv 11 Performance
- Made in the USA
- 100% Performance and Price Guarantee

## Images

![12x20x1 Merv 11 Furnace Filter (12 Pack) - Image 1](https://images-na.ssl-images-amazon.com/images/I/41NpCpkWIVL.jpg)

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**Shop now:** [https://www.desertcart.co.za/products/40492072-12x20x1-merv-11-furnace-filter-12-pack](https://www.desertcart.co.za/products/40492072-12x20x1-merv-11-furnace-filter-12-pack)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-09*