Tough Grade TG-4 RV Convection Microwave
A Greystone-size convection microwave sold with its trim kit. The missing wattage figures make it harder to plan around an inverter.
Amazon $329.99$329.99
The Tough Grade TG-4 RV Convection Microwave is the better RV microwave overall, rated 3.3 to 3.1. The Tough Grade TG-4 RV Convection Microwave leads on features.
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
RecPro RPM-4 RV Convection Microwave
A Greystone-size 1.1 cu ft convection microwave with 1,000 W output. Best as a replacement in RVs built around the Greystone opening.
Amazon $329.95$329.95
Which should you buy?
- Choose the Tough Grade TG-4 RV Convection Microwave for features (convection oven, installs with no extra parts vs convection oven).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every convection & air fry RV microwave; a clear win is highlighted. How we rank explains each one.
| Factor weight | Tough Grade TG-4 RV Convection Microwave | RecPro RPM-4 RV Convection Microwave |
|---|---|---|
| Overall rating | 3.3/5 | 3.1/5 |
| Value 25% | 42 $299.99 per cu ft ($329.99, 1.1 cu ft) | 42 $299.95 per cu ft ($329.95, 1.1 cu ft) |
| Capacity 15% | 30 1.1 cu ft | 30 1.1 cu ft |
| Cooking power 15% | 50 output wattage not published (neutral score used) | 100 1,000 W cooking power |
| Input draw 15% | 50 input wattage not published (neutral score used) | 43 1,500 W rated input |
| Features 20% | 80 convection oven, installs with no extra parts | 45 convection oven |
| Warranty 10% | 50 1-year warranty | 0 warranty not published, scored as none |
Specifications
| Tough Grade TG-4 RV Convection Microwave | RecPro RPM-4 RV Convection Microwave | |
|---|---|---|
| Cooking | ||
| Mounting | Built-in | Built-in |
| Modes | Microwave, convection | Microwave, convection |
| Capacity | 1.1 cu ft | 1.1 cu ft |
| Cooking power | - | 1,000 W |
| Convection power | - | 1,600 W |
| Turntable | - | 12.5 in |
| Power | ||
| Rated input | - | 1,500 W |
| Voltage | 120 V AC | 120 V AC |
| Fit | ||
| Outside (W x H x D) | 21 x 11 x 15.8 in | 21 x 11 x 15.8 in |
| Trim kit | Included | - |
| Size with trim (W x H) | 24.2 x 18.2 in | 24.2 x 18.2 in |
| Weight | 41 lb | 41 lb |
| Support | ||
| Warranty | 1 year | - |