Introduction
Thank you for choosing ThreadNanny Oven Liners. This manual provides essential information for the proper installation, use, and maintenance of your new oven liners. Designed to protect your oven from spills and drips, these heavy-duty, non-stick liners help keep your appliance clean with minimal effort.

Image: Two ThreadNanny oven liners, rolled and flat, with the product packaging. These liners are designed to protect the bottom of your oven.
Safety Information and Important Warnings
- Temperature Limit: These oven liners are safe for temperatures up to 500°F (260°C). Do not exceed this temperature.
- Avoid Direct Heat: Never allow the oven liner to come into direct contact with heating elements or open flames. This can cause damage to the liner and potentially create smoke or fire hazards.
- Material Safety: ThreadNanny oven liners are BPA and PFOA free, and do not contain lead or cadmium. They are designed not to leach hazardous toxins or chemicals into your food when used as directed.
- Ventilation: Ensure proper oven ventilation during use, especially during the first few uses, as a slight odor may be present.
Product Features
- Premium Quality: Made from durable PTFE-fiberglass coating with a 0.28mm thickness for enhanced longevity.
- Non-Stick Surface: Double-sided non-stick coating ensures easy cleanup of spills and baked-on messes.
- Generous Size: Each liner measures 17" x 25", suitable for most standard ovens and trimmable for a custom fit.
- High Heat Resistance: Safe for use in ovens up to 500°F (260°C).
- Food Safe: BPA, PFOA, Lead, and Cadmium free.
- Reusable & Dishwasher Safe: Designed for repeated use and easy cleaning.

Image: A close-up view highlighting the premium PTFE-fiberglass coating and 0.28mm thickness of the oven liner, emphasizing its quality and durability.
Setup and Installation
Proper placement of the oven liner is crucial for safety and effectiveness. Follow these guidelines based on your oven type:
- Measure and Trim (if necessary): The liners are 17" x 25". If your oven floor is smaller, you can trim the liner with scissors to achieve a custom fit. Ensure the liner does not block any vents or air circulation paths.
- For Electric Ovens with a Hidden Heating Element: Place the oven liner directly on the lowest rack or tray. Do not place it directly on the oven floor if the heating element is hidden beneath it.
- For Electric Ovens with an Exposed Heating Element: Slide the oven liner underneath the heating element, directly on the bottom of the oven floor. Ensure there is no direct contact between the liner and the heating element.
- For Gas Ovens: Place the oven liner on the lowest rack, not directly on the oven floor. Direct contact with an open flame or gas burner can damage the liner and pose a fire risk.

Image: Visual guide for installing oven liners in electric ovens, differentiating between visible and hidden heating elements for correct placement.
Operating Instructions
Once installed, your ThreadNanny oven liner is ready to catch drips and spills, keeping your oven clean. It can be used for various cooking applications:
- Oven Baking/Roasting: The liner will collect any food that drips from baking sheets, casserole dishes, or roasting pans.
- Grilling (Charcoal or Gas): The liner can be used as a grill mat to prevent small food items from falling through grates and to make grill cleanup easier. Place it directly on the grill grates.
- Microwave Ovens: Can be used as a mat inside microwave ovens to catch spills and make cleaning easier.
- Toaster Ovens: Place on the bottom rack or tray to protect the toaster oven from crumbs and spills.
- Air Fryers: Can be cut to size and placed in the bottom of air fryer baskets to prevent food from sticking and simplify cleaning.

Image: A compilation of images demonstrating the versatility of the oven liners, showing their use in a conventional oven, on a BBQ grill, as a baking tray liner, and within an air fryer.
Maintenance and Cleaning
Maintaining your ThreadNanny oven liner is simple, ensuring its longevity and continued effectiveness:
- Easy Removal: Allow the oven to cool completely before removing the liner.
- Manual Cleaning: For light spills, simply wipe the liner clean with a damp cloth or sponge. For heavier messes, rinse under warm water with mild dish soap.
- Dishwasher Safe: The oven liners are dishwasher safe. Place them on the top rack for best results.
- Drying: Air dry or wipe dry before storing or reusing.
- Storage: Store flat or rolled to prevent creases.

Image: A visual guide illustrating the cleaning process for the oven liners, including rinsing under water, wiping with a cloth, and placement in a dishwasher.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Liner is smoking or burning. | Direct contact with heating element or open flame; oven temperature too high. | Immediately turn off the oven. Ensure the liner is not touching any heating elements or flames. Verify oven temperature does not exceed 500°F (260°C). Review installation instructions. |
| Liner is warping or deforming. | Excessive heat, prolonged exposure to very high temperatures, or direct contact with heating elements. | Ensure the liner is correctly placed according to oven type. Avoid using at temperatures above 500°F (260°C). Replace if significantly warped. |
| Food sticking to the liner. | Heavy baked-on residue; liner not cleaned properly after previous use. | Clean the liner thoroughly after each use. For stubborn residue, soak in warm soapy water before cleaning. |
| Liner slides around in the oven. | Liner is too small for the oven floor/rack; uneven surface. | Ensure the liner is cut to the appropriate size for a snug fit without blocking vents. If on a rack, ensure it's stable. |
Specifications
| Attribute | Detail |
|---|---|
| Material | Teflon (PTFE-fiberglass coating) |
| Dimensions (each liner) | 17 inches (W) x 25 inches (L) |
| Thickness | 0.28mm |
| Color | Black |
| Heat Resistance | Up to 500°F (260°C) |
| Material Type Free | Perfluorooctanoic Acid (PFOA) Free, BPA Free, Lead Free, Cadmium Free |
| Dishwasher Safe | Yes |
| Item Weight (total) | 8 ounces |
| Model Number | 2_pcs_OvenMat_17x25inches_TN |
| UPC | 199284623194 |
| Manufacturer | Manki Trading LLC |

Image: A graphic illustrating the precise dimensions of the oven liner, measuring 17 inches in width and 25 inches in length.
Customer Support
For any questions, concerns, or assistance with your ThreadNanny Oven Liners, please contact our customer support team. While specific warranty details are not provided in this manual, we are committed to ensuring your satisfaction.
You can typically find contact information for ThreadNanny through the retailer where you purchased the product or by visiting the official ThreadNanny brand store online.
Online Store: ThreadNanny Store on Amazon