---
product_id: 727825124
title: "Genuine Honeywell Home CG510A Thermostat Guard, Small, Fits Thermostat 4.375H x 4.375W Inches and Less"
brand: "honeywell home"
price: "₩164963"
currency: KRW
in_stock: false
reviews_count: 5
category: "Honeywell Home"
url: https://www.desertcart.kr/products/727825124-genuine-honeywell-home-cg510a-thermostat-guard-small-fits-thermostat-4
store_origin: KR
region: South Korea
---

# Fits thermostats ≤4.375" Lock & key security UV & chemical resistant Genuine Honeywell Home CG510A Thermostat Guard, Small, Fits Thermostat 4.375H x 4.375W Inches and Less

**Brand:** honeywell home
**Price:** ₩164963
**Availability:** ❌ Out of Stock

## Summary

> 🔐 Secure your comfort zone with style and control!

## Quick Answers

- **What is this?** Genuine Honeywell Home CG510A Thermostat Guard, Small, Fits Thermostat 4.375H x 4.375W Inches and Less by honeywell home
- **How much does it cost?** ₩164963 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/727825124-genuine-honeywell-home-cg510a-thermostat-guard-small-fits-thermostat-4)

## Best For

- honeywell home enthusiasts

## Why This Product

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

## Key Features

- • **Ventilated Design:** Optimized vents maintain accurate thermostat performance without compromise.
- • **Tamper-Proof Control:** Lock and key system ensures only you set the temperature.
- • **Perfect Fit Precision:** Designed for thermostats up to 4.375" x 4.375" for seamless installation.
- • **Versatile Compatibility:** Fits popular Honeywell models and similar-sized thermostats for easy upgrade.
- • **Crystal Clear Protection:** UV-resistant clear casing keeps your thermostat visible and stylish.

## Overview

The Honeywell Home CG510A Thermostat Guard is a compact, clear protective cover with a built-in lock and key, designed to prevent unauthorized thermostat adjustments. It fits thermostats up to 4.375" square, features UV and chemical-resistant plastic, includes ventilation for optimal performance, and is compatible with multiple Honeywell models. Ideal for both residential and commercial use, it offers peace of mind and sleek protection.

## Description

Small and clear thermostat guard prevents unwanted or unauthorized temperatures on your thermostat. Built-in lock and key. Fits Honeywell Thermostat Models: CT87, CT3x, No Wall Plate, RTH5100B (Remove Guard to access battery door) Fits other thermostats of similar size. Internal Dimensions: 4-7/16"W x 4-7/16"H x 2-1/4"D Exterior Dimensions: 5-7/8"W x 5-7/8"H x 2-1/2"D Includes: Cover, Base, Lock, Keys, Mounting Hardware

Review: It fits well even on other brands
Review: Venditore poco serio e prodotto molto molto scadente

## Features

- Small Thermostat Guards protect your thermostat and prevent others from tampering your heating and cooling options. Fits Thermostat 4.375H x 4.375W or less
- This easy to install cover includes a lock and key for full control and vents for optimal thermostat performance. Key lock with interior shelf to prevent tampering
- Clear plastic casing is chemical and UV resistant and resists yellowing
- Ideal for use in commercial or residential environments
- Designed to fit your existing thermostat for easy installation
- Cover fits Honeywell Home Thermostat Models RTH8800WF, RTH8560D, CT87K, CT30A, CT31A, CT33A models. No wall plate
- Dimensions: 5.88"W x 5.88"H x 2.50"D
- Internal Dimensions: 4.44"W x 4.44"H x 2.25"D

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Honeywell Home |
| Model Number | CG510A1019/N |
| Product Dimensions | 14.92 x 6.35 x 14.92 cm; 272.16 g |
| Color | clear |
| Name List for Name Plates | Traditional |
| Material | Plastic |
| Laser Class | Low Voltage |
| Included Components | Thermostat Guard, Wall Anchor, Screws, Keys |
| Are Batteries Included | No |
| Item Weight | 272 g |

## Product Details

- **Brand:** Honeywell Home
- **Model Name:** CG510A1019/N
- **Special Feature:** Low Voltage
- **Color:** clear
- **Specific Uses For Product:** Furnace

## Images

![Genuine Honeywell Home CG510A Thermostat Guard, Small, Fits Thermostat 4.375H x 4.375W Inches and Less - Image 1](https://m.media-amazon.com/images/I/318vmhLUL0L._AC_US100_.jpg)
![Genuine Honeywell Home CG510A Thermostat Guard, Small, Fits Thermostat 4.375H x 4.375W Inches and Less - Image 2](https://m.media-amazon.com/images/I/31htEFdD0iL._AC_US100_.jpg)
![Genuine Honeywell Home CG510A Thermostat Guard, Small, Fits Thermostat 4.375H x 4.375W Inches and Less - Image 3](https://m.media-amazon.com/images/I/41AJa7GbH8L._AC_US100_.jpg)
![Genuine Honeywell Home CG510A Thermostat Guard, Small, Fits Thermostat 4.375H x 4.375W Inches and Less - Image 4](https://m.media-amazon.com/images/I/41LFlvBFDwL._AC_US100_.jpg)
![Genuine Honeywell Home CG510A Thermostat Guard, Small, Fits Thermostat 4.375H x 4.375W Inches and Less - Image 5](https://m.media-amazon.com/images/I/41W3t7dkjrL._AC_US100_.jpg)

## Questions & Answers

**Q: Can I order multiple units that all use the same key?**
A: I ordered three of these and they all have the same key.

**Q: Is cover attached to frame to prevent any one from using knife to pop off the cover from the top to get to thermastat?**
A: If someone really wanted to get the cover off they could. We have a lot of out of town guest and it keeps them from changing the temps.

**Q: What are the dimensions?  There are two listed: a) 8.8 x 13 x 9.5 inches. OR b) 5-7/8 W x 5-7/8 H x 2-1/2 D.  So which is it?**
A: 5-7/8 hx2-1/2

**Q: if my thermostat size is 5 1/2 " x 5 1/5 " x 1 1/2 will this work?**
A: No

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by T***L on July 1, 2024*

It fits well even on other brands

### ⭐ Review
*by M***I on December 18, 2022*

Venditore poco serio e prodotto molto molto scadente

### ⭐⭐⭐⭐ Review
*by Y***T on March 29, 2025*

Amazing

## Frequently Bought Together

- Genuine Honeywell Home CG510A Thermostat Guard, Small, Fits Thermostats 4.375H x 4.375W inches or smaller
- Honeywell Home CT87K1004 The Round Heat Only Manual Thermostat
- Honeywell Home CT87N1001 The Round Non-Programmable Manual Thermostat, Large, White

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-01-24*