The slimmest duplex GFCI profile on the market — that’s what matters when you’re wrestling with a crowded electrical box. This 15 Amp, 125 Volt AC outlet in Light Almond delivers legitimate space savings without compromising safety features. The Continuous Smartest Self-Test monitoring means it’s checking itself even when homeowners forget their monthly test button ritual.
Worth it for contractors who’ve cursed at overstuffed boxes or struggled with retrofit installations. Skip it if you’re doing new construction with deep boxes and plenty of room — save a few bucks with a standard-depth GFCI.
SmartlockPro Design and Installation Reality
Back-wired and side-wired termination options give you flexibility when wire length is tight. The self-grounding metal clip saves time in metal boxes — no pigtail required. That slim profile isn’t marketing fluff. Standard GFCIs often stick out far enough to make wallplate installation a fight. This one doesn’t.
The reset lockout prevents reset if miswired or not operating properly. No more callbacks because someone swapped line and load. The feed-through terminals protected by yellow sticker make it obvious which terminals to use for downstream protection.
Here’s what contractors consistently mention: the 20 Amp feed-through capability on 15A device handles real-world loads without nuisance tripping. 4.6/5 stars from 8,783 Home Depot reviews and 4.8/5 stars from Leviton Store customers back up the field performance.
Technical Specifications
| Specification | Value |
|---|---|
| Amperage | 15 Amp |
| Voltage | 125 Volt AC |
| Feed-Through Rating | 20 Amp |
| NEMA Configuration | 5-15R (Standard 15A, 125V duplex) |
| Termination | Back-wired and side-wired (2-pole, 3-wire) |
| Grounding | Self-grounding metal clip/strap |
| Profile | SmartlockPro Slim (slimmest duplex GFCI profile on the market) |
| Indicator | Green LED (steady when power is present and not tripped) |
Model Variations and Weather Resistance
The Light Almond version covered here works for indoor applications. For Montana’s outdoor installations where temperature swings from -30°F to 100°F matter, GFWT1-T provides the weather-resistant version with the same slim profile.
Other variations in the SmartlockPro line:
- GFTR1 / GFTR1-3T: Tamper-Resistant version (available in single or 3-packs)
- GFNL1-T: Tamper-Resistant with LED Nightlight
- AGTR1-T: Dual-Function AFCI/GFCI protection
The Monochromatic Light Almond finish (matching buttons and face) looks cleaner than the two-tone designs common on cheaper GFCIs.
Frequently Asked Questions
Q: Does the slim profile compromise durability? A: Contractors appreciate the durability and compliance of Leviton GFCIs, which generally last 15-25 years under normal conditions. The internal components remain full-sized — only the housing design changed.
Q: What’s actually included in the box? A: 15A GFCI Outlet (Light Almond), Matching wall plate (included in some retail packaging, others sold separately), Self-grounding clip (pre-attached). Check packaging — some retailers bundle the wallplate, others don’t.
Q: How does the self-test feature work? A: Continuous Smartest Self-Test monitoring with LED status indicator runs automatic checks. The Green LED indicator shows power present and not tripped. If the self-test fails, the outlet won’t reset.
Q: Will this handle Montana’s temperature extremes? A: The indoor version handles normal temperature ranges. For unheated garages or outdoor locations with Montana’s -30°F winters, use the weather-resistant version GFWT1-T instead.
Q: Can I use the 20-amp feed-through with 15-amp wire? A: No. The 20 Amp feed-through capability refers to the device’s ability to pass through 20 amps to downstream outlets when installed on a 20-amp circuit with proper wire gauge. On 15-amp circuits, follow standard 15-amp wiring practices.
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