SunRay Grandby 3-Person Outdoor Infrared (300D3)
Retailer price at SaunaKits, last checked 30 Oct 2026. Price may vary. Stock status not shown on the listing.
Affiliate link: Cedar Scout may earn a commission if you buy through it. Commissions never change our scores or rankings.
Our take
The SunRay Grandby 3-Person Outdoor Infrared (300D3) is a 3-person infrared cabin for outdoor use, sold by SaunaKits for $3,990 when we last checked on 30 Oct 2026. Among 6 infrared outdoor saunas we list, its spec score ranks 2 of 6, and its price compares with a $4,290 median for the group.
Needs a dedicated 120V circuit. Budget for an electrician and, where required, a permit. Its published size leaves about 7.5 sq ft of footprint per seat.
Strengths
- Priced well for its specs: $3,990 against a $4,290 median for infrared outdoor saunas
- Warranty: SunRay lists 7 years on the cabin and heaters
- Free shipping, per the seller listing
Trade-offs
- Needs its own dedicated 120V 20A circuit
Good fit for
- Households of up to 3 at a time
- Backyards with a level, solid base and outdoor-rated power nearby
- Value shoppers: low price for its specs among similar saunas
Consider another option if you're
- Anyone who can't add a dedicated 20A circuit
- Anyone who wants hot stones and steam: this is infrared, with gentler air heat
- Anyone planning an indoor install: it's built for outdoors
Specifications
| Brand | SunRay |
|---|---|
| Model | Grandby 3-Person Outdoor Infrared (300D3) |
| Type | Infrared · outdoor cabin |
| Price | $3,990 last checked 30 Oct 2026 Free shipping |
| Seller | SaunaKits (affiliate link) |
| Availability | Stock status not shown on the listing |
| Shipping | Free, per the seller listing |
| Seats | 3, per the maker |
| Exterior W × D × H | 69 × 47 × 87 in source |
| Footprint | 22.5 sq ft |
| Interior size | Not published on the listing |
| Heating | Far infrared panels |
| Maximum temperature | 140 °F |
| Electrical | 120V, 20A · 2,100 W source |
| Connection | 120V 20A outlet |
| What that means | Needs a dedicated 120V circuit |
| Wood | Canadian hemlock |
| Warranty | SunRay lists 7 years on the cabin and heaters source |
| Indoor or outdoor | Outdoor Sold as an outdoor sauna, but SunRay's general warranty text says its saunas are for indoor use. Ask the seller to confirm outdoor coverage. |
| Listed features | Bluetooth |
Interior size, heater model (for infrared) and the largest delivered piece aren't on the seller's listing. Check with the seller before you buy.
Score breakdown
How the 75 spec score splits by category, each compared with similar saunas. Full method.
| Construction & durability | Not published, left out |
|---|---|
| Value | 10.0 / 10 |
| Heating | 5.2 / 10 |
| Warranty & support | 7.0 / 10 |
| Installation | 7.4 / 10 |
| Features | Not scored |
| Appearance | Not rated yet |
| Space & capacity | 6.2 / 10 |
Dimensions and installation
- Power. Needs a dedicated 120V circuit (120V, 20A · 2,100 W). Have a licensed electrician confirm your panel and wiring before you order.
- Floor space. The maker doesn't publish clearances here, so Fit Check assumes 3 in at the sides and back: plan on about 75 × 50 in of floor.
- Base. Outdoor saunas need a level, solid base such as a concrete pad or pavers, and outdoor-rated wiring. See our installation cost guide.
- Doorways. The listing doesn't give the largest delivered piece, so measure your narrowest door or gate and ask the seller.
Running cost estimate
At its rated 2,100 W, four 45-minute sessions a week (warm-up included) at the U.S. average of 18.3¢ per kWh (EIA) come to about $5 a month, or $60 a year. This is an estimate, not a quote: heaters cycle off once hot, so most owners pay less. Use your own rate in the True Cost calculator.
Warranty and support
SunRay lists 7 years on the cabin and heaters. source Orders, delivery and warranty claims go through SaunaKits, the seller, and SunRay, the maker. Read the written warranty before you buy, because outdoor use and self-installation can change the terms.
Check current price & availability
Retailer price at SaunaKits · last checked 30 Oct 2026 · price may vary
- Shipping and delivery details on the seller's page ↗
- Compare similar saunas
- See if it fits my space
- Estimate the five-year cost
Affiliate link: Cedar Scout may earn a commission if you buy through it. Commissions never change our scores or rankings.
Similar saunas
Compare these side by side in Sauna Matchup · All SunRay saunas
Related guides
Sources
Price, size, power and warranty come from the seller's listing here, last checked 30 Oct 2026. Prices change often; the seller's page is the final word. Recall status: not part of the 17 Sept 2026 CPSC sauna recall, the recall we checked. We haven't tested this sauna in person. Electrical details are preliminary and don't replace a licensed electrician.
Independent by design. We order saunas with our published method. Cedar Scout may earn a commission when you buy through affiliate links on this page. Commissions never change which saunas appear, their scores or their order. How we earn money.