Kohler 1130-0 Underscore® 60" x Review: Specs, Pros and Cons
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This kohler 1130 0 underscore 60 x review looks at a white acrylic drop-in bath designed for straightforward installation. The tub measures 63.1 inches in length and holds 60 or more gallons of water. Its crisp, contemporary design fits modern bathrooms without overwhelming the space. You get molded lumbar support for added comfort during long soaks. The slotted overflow allows you to fill the tub deeper without spilling. This model requires a separate trim kit for proper setup. It is a solid choice if you need a durable, no-frills soaking option that prioritizes function over flashy features.
What stands out
- Acrylic construction provides a durable, easy-to-clean surface.
- Molded lumbar support adds ergonomic comfort for the back.
- Slotted overflow design enables deeper, safer water filling.
- Supports both drop-in and undermount installation styles.
Who it fits
Good fit for
This tub suits homeowners who want a reliable, easy-to-install soaking tub. It is ideal for standard bathrooms where a 63.1-inch length fits comfortably. The 60-gallon capacity is perfect for those who enjoy deep soaks. If you prefer a minimalist, white aesthetic, this model delivers that look. It works well for renters or owners who plan to handle the installation themselves, provided they purchase the necessary trim kit separately. The lumbar support is a nice touch for daily relaxation.
Who should skip it
You should look elsewhere if you need a compact tub for a small powder room or bathroom. This unit requires significant floor space due to its 63.1-inch length. It is not suitable if you want a freestanding piece as a room centerpiece, as this is strictly a drop-in or undermount model. Additionally, if you expect a complete package with all hardware included, note that the trim kit is sold separately. The simple design may feel too basic for those seeking ornate or luxurious styling.
Verdict: The Kohler Underscore offers a practical, durable soaking experience with a clean design. It is a solid, no-nonsense choice for standard bathroom layouts.
Key specs explained for this tub
Material: Acrylic
Acrylic is a durable plastic that resists chipping and staining. It retains heat better than metal, keeping your bathwater warm longer. You can clean it with mild soap and water. This material is common in modern tubs because it is lightweight yet strong. It offers a smooth surface that feels nice against your skin. Acrylic tubs are easier to install than cast iron due to their lower weight.
Length: 63.1 inches
This length provides ample space for your body. Most adults can stretch out comfortably without their head or feet hanging over the edges. It fits standard bathroom footprints while allowing for a relaxed soak. When comparing tubs, check your available floor space. This dimension ensures you have room to move slightly without feeling cramped. It is a practical size for most master bathrooms.
Water Capacity: 60 Or More Gallons
A capacity of sixty gallons or more allows for deep soaking. You can fill the tub to a level that covers your shoulders. This volume helps maintain water temperature during longer baths. It is suitable for users who prefer immersion over shallow sitting. When shopping, compare this to smaller tubs that hold less water. More water means you spend less time topping it up.
Type: Drop-in
Drop-in tubs are designed to sit inside a custom frame or deck. You need to build a surrounding structure to support the tub. This style offers a built-in look that integrates with your bathroom decor. It requires more installation work than freestanding units. You will need a separate deck kit for proper mounting. This option is ideal if you want a seamless, built-in appearance.
Design and build specs
According to the listing, this Kohler Underscore tub is constructed from acrylic. This material offers a smooth, non-porous surface that resists stains and is easy to maintain with mild soap. The white finish provides a clean, crisp look that complements contemporary bathroom decor. The design features a simple, uncluttered aesthetic that avoids visual clutter, allowing the tub to blend seamlessly into modern spaces without dominating the room.
The physical dimensions are substantial. The tub measures 63.1 inches in length, 36 inches in width, and 26 inches in height. It weighs 100 pounds, which requires a sturdy floor structure to support the weight of the unit plus water. The internal layout includes molded lumbar support for added comfort during soaking. A slotted overflow drain allows you to fill the tub deeper without risk of overfilling, enhancing the soaking experience.
This model is classified as a drop-in or under-mount bath. This installation type means the tub is designed to be set into a custom deck or frame rather than standing alone. You will need to purchase the K-590-NA trim kit separately to complete the installation. The 60-inch length and 32-inch width (implied by the 60x32 title) provide ample space for most users, while the white acrylic surface ensures the tub remains a focal point of understated elegance in your bathroom.
Setup and everyday use details
Installation requires a specific framing approach for this drop-in model. You must use the K-590-NA trim kit, which is sold separately, to complete the under-mount or drop-in setup. The tub’s external dimensions are 63.1 inches in length, 36 inches in width, and 26 inches in height. Its weight is listed at 100 pounds. This mass helps stabilize the unit once it is secured into your bathroom cabinetry. You need to ensure your subfloor can support this load before beginning the project. The 60-inch interior length provides ample space for stretching out. The water capacity is 60 gallons or more. This volume allows for deep soaking sessions. The slotted overflow feature lets you fill the tub higher than standard limits without the water spilling over the rim immediately. This design choice supports deeper immersion. The molded lumbar support is built into the acrylic shell. This contour is positioned to offer extra comfort for your lower back while you sit. The simple, crisp lines of the Underscore design mean it does not require complex cleaning routines. A soft cloth and mild soap are sufficient for daily maintenance. The white acrylic surface resists stains and is easy to wipe down after use. You do not need special cleaners to keep the finish looking new. The contemporary flair of the tub fits well in modern bathrooms. It integrates seamlessly with standard plumbing fixtures. The straightforward design means there are no intricate parts to manage during your bath routine.
Check Fit And Kit Needs
Before you finalize this purchase, verify your bathroom layout carefully. The listing specifies a length of 63.1 inches and a width of 36 inches. You must ensure your framing accommodates these external dimensions precisely. Since this is a drop-in or under-mount model, you need to purchase the K-590-NA trim kit separately to complete the installation. Do not assume it includes necessary mounting hardware. Check that your plumbing aligns with the slotted overflow feature for deep soaking. The acrylic surface requires mild soap and water for cleaning. Avoid abrasive cleaners to preserve the white finish. This tub suits those who prefer a minimalist, contemporary aesthetic. It fits well in modern bathrooms where space efficiency matters. Compare its 60-gallon water capacity against other soaking tubs in your guide. Ensure the molded lumbar support meets your comfort needs. Confirm that the weight of 100 pounds does not exceed your floor’s load capacity. This practical approach ensures a smooth setup and long-term satisfaction with your new bathing experience.
Check before you buy
- Confirm 63.1 by 36 inch space exists
- Buy K-590-NA trim kit separately
- Check floor load for 100 pound weight
- Verify plumbing matches slotted overflow design
- Ensure acrylic care fits your routine
The product at a glance
Kohler Underscore 60-inch Drop-in Tub
Best for: standard 60-inch alcove bathrooms
- Type
- drop-in
- Material
- Acrylic
- Length
- 63.1 inches
- Water Capacity
- 60 Or More Gallons
- Color
- White
- Dimensions
- 63.1 × 36 × 26 inches
View on Amazon: Kohler Underscore 60-inch Drop-in Tub Affiliate link
This 60-inch drop-in bathtub is made from white acrylic. It measures 63.1 inches long, 36 inches wide, and 26 inches high. The tub holds 60 or more gallons of water. It includes molded lumbar support and a slotted overflow for deep soaking. You can install it as a drop-in or under-mount unit. It suits those who want a simple, contemporary design.
Pros
- Acrylic construction for durability and easy cleaning
- Molded lumbar support for added comfort
- Slotted overflow allows for deeper water levels
- Fits standard 60-inch alcove spaces
Cons
- Heavy at 100 pounds, requiring sturdy floor support
- Requires separate purchase of mounting hardware
- No built-in jets or massage features
Good fit if
- You want a standard 60-inch soaking tub
- You prefer a simple, contemporary design
- You need a drop-in or under-mount installation
Skip if
- You need a jetted or whirlpool tub
- You have limited floor load capacity
- You want a compact soaking tub under 60 inches
Verdict: Kohler Underscore 60-inch Acrylic Tub is a solid choice for bathrooms needing a standard 60-inch drop-in tub with lumbar support. It fits well in alcoves where space is standard but comfort is key.
Specifications side by side
| Spec | Kohler Underscore 60-inch Drop-in Tub |
|---|---|
| Type | drop-in |
| Material | Acrylic |
| Length | 63.1 inches |
| Water Capacity | 60 Or More Gallons |
| Color | White |
| Dimensions | 63.1 × 36 × 26 inches |
| Weight | 100 pounds |
| Size | 60 Or More Gallons |
| Model | 1130-0 |
Frequently asked questions
Is the Kohler Underscore 60-inch tub suitable for standard alcove bathrooms?
Yes, this model is designed for standard 60-inch alcove bathrooms. Its dimensions allow it to fit into common framing structures without requiring custom modifications. The white acrylic finish complements most contemporary bathroom decors. You get a reliable, straightforward installation option for typical residential layouts.
How much water does the Kohler 1130-0 hold?
The tub holds 60 or more gallons of water. This capacity supports a deep, immersive soak for most adults. The internal volume is optimized for comfort while fitting within standard alcove constraints. You do not need to worry about excessive water usage for a typical bath.
What are the exact external dimensions of this drop-in tub?
The external length is 63.1 inches, the width is 36 inches, and the height is 26 inches. These measurements ensure proper fit within a standard 60-inch alcove space. You must account for these external dimensions when planning your framing and tile work to avoid installation issues.
Does this tub include the drain and overflow hardware?
No, the listing indicates that the K-590-NA trim kit is sold separately. You must purchase this specific trim kit to complete the under-mount or drop-in setup. Ensure you buy the correct hardware before installation to avoid delays or compatibility problems with your plumbing fixtures.
How heavy is the Kohler Underscore 60-inch tub?
The tub weighs 100 pounds. This weight is manageable for standard floor joists in most homes but requires careful handling during installation. You should plan for two people to move it safely. The solid acrylic construction provides durability without being overly burdensome to install.
Is the white finish easy to clean and maintain?
Yes, the white acrylic surface is non-porous and resists stains. You can clean it easily using mild soap and water. The smooth finish prevents dirt buildup and maintains its crisp look over time. Regular cleaning keeps the tub looking new without requiring specialized chemicals or abrasive tools.
Can I install this tub as a drop-in or under-mount model?
Yes, this tub supports both drop-in and under-mount installation methods. You need the K-590-NA trim kit to secure it properly in either configuration. This flexibility allows you to choose the style that best matches your countertop or deck design. The acrylic body ensures a secure fit in either setup.