Tandem undermount drawer slides deliver reliable full-extension access, quiet operation, and concealed hardware for a clean cabinet look. This guide highlights top Blum Tandem systems designed to work with both face-frame and frameless cabinets, offering soft-close BLUMOTION and durable load capacity. Read on to compare kits with different lengths and configurations, so you can choose the right set for your kitchen, bathroom, or custom wood projects.
| Product | ||||
|---|---|---|---|---|
| Blum Tandem Plus BLUMOTION Kit (6 Kits) – 21-Inch | 21 in | Complete kit | Six kits with full hardware for multi-drawer projects | 100 lb per pair |
| Blum Tandem Plus BLUMOTION Kit – 21-Inch (Single) | 21 in | Single kit | Precise soft-close and full extension | 100 lb per pair |
| Blum Tandem Plus BLUMOTION Kit – 18-Inch | 18 in | Complete kit | Concealed undermount with soft close | 100 lb per pair |
| BLUM Tandem Drawers Bundle – 15-Inch | 15 in | Bundle kit | All-in-one 15″ drawer kit with BLUMOTION | Not specified in summary |
| BLUM Tandem Bundle – 18-Inch | 18 in | Bundle kit | Includes slides, locking devices, brackets | Not specified in summary |
These products come from Blum, a leader in concealed undermount slides, and are suitable for various cabinet configurations. When selecting a kit, consider drawer width, cabinet style, and the number of drawers you plan to install. The following sections review five representative options to help you decide which system best fits your project.
Blum Tandem Plus BLUMOTION Kit – 21-Inch, Full Extension
This kit includes six pairs of concealed undermount drawer runners, plus locking devices and rear sockets, designed for wood drawers with full extension access. It is compatible with both face-frame and frameless cabinets. Integrated BLUMOTION soft close ensures quiet, gentle drawer returns, protecting cabinetry and delivering a premium feel for high-traffic kitchens and baths. The 21-inch length supports a wide range of drawer depths, making it a versatile choice for larger projects.
Blum Tandem Plus BLUMOTION Kit – 21-Inch (Single)
This single-kit option provides one pair of runners with one left and right locking device, plus rear sockets and screws. It’s ideal when upgrading a single long drawer or adding a premium soft-close experience to a select drawer run. The concealed undermount design keeps hardware hidden for a clean cabinet interior while offering full extension access for easier loading and retrieval. Compatibility with varied cabinet styles makes it a reliable upgrade for kitchens and bathrooms alike.
Blum Tandem Plus BLUMOTION Kit – 18-Inch
This 18-inch kit includes six pairs of runners with locking devices and rear sockets, delivering dependable full-extension performance with BLUMOTION soft close. It’s well-suited for mid-sized drawers in kitchens, bathrooms, or built-ins. The full extension design allows access to nearly the entire drawer, improving organization and usability while maintaining a hidden, high-end appearance behind cabinet doors.
Bundle – 15-Inch BLUM TANDEM Drawer Slides
This complete 15-inch bundle provides a ready-to-install kit with slides, locking devices, rear mounting brackets, screws, and instructions. The integrated soft-close functionality reduces drawer slam while maintaining a smooth, quiet close. The full-extension undermount design keeps drawers accessible to the rear, enabling easier loading and organization in smaller or medium-sized drawers found in kitchens and offices.
Bundle – 18-Inch Blum Tandem Drawer Slides with BLUMOTION
This 18-inch bundle includes slides, locking devices, rear mounting brackets, screws, and instructions. It emphasizes full-extension, concealed slides with integrated BLUMOTION for quiet, controlled closing. The kit is designed for both face-frame and frameless cabinets, making it suitable for a range of kitchen and bathroom renovation projects where a seamless interior looks and dependable operation matter.
BLUM Tandem Plus BLUMOTION Complete Pair – 15 Inch
This 15-inch complete pair offers optional four-dimensional adjustment with different locking devices, enabling precise alignment for multiple drawer configurations. The concealed undermount runners provide a clean, modern look while ensuring a smooth, quiet closing via BLUMOTION. It is a practical option for mid-sized drawers in kitchens or workshops that require reliable performance and flexible installation.
Buying Guide: Key Considerations For Tandem Undermount Drawer Slides
- Drawer length and load capacity: Match the slide length to your drawer width and confirm that the system supports the intended load. Blum’s Tandem systems list 100 lb per pair in many kits, which covers typical kitchen and bathroom drawers.
- Cabinet style: Choose between face-frame and frameless compatibility. Most Tandem kits are designed for both, but check the hardware compatibility and mounting requirements for your cabinet construction.
- Soft-close mechanism: BLUMOTION provides quiet, controlled closing and helps prevent bounce or slamming. Consider whether you want standard soft-close or an upgraded option for high-traffic installations.
- Full-extension access: Ensure the drawer length and rail length align to maximize drawer reach. Full-extension slides enable easier access to items near the back of the drawer.
- Install complexity and hardware: Some bundles include locking devices, rear sockets, brackets, and screws. Completeness reduces the need to source additional parts separately.
- Number of drawers: For projects involving multiple drawers, multi-kit bundles can simplify procurement and ensure consistent performance across all slides.
- Return and compatibility: Verify that the kit supports your drawer box height, front mounting, and any existing face-frame or frameless configurations to avoid fit issues.
- Durability and brand reliability: Blum is a established specialist in concealed slides, offering durable steel construction and integrated soft-close options suitable for long-term use.
Choosing the right tandem undermount drawer slides involves balancing drawer size, cabinet style, and desired soft-close quality. The featured Blum kits provide options across 15-, 18-, and 21-inch lengths, with complete bundles available for easier installation. Consider starting with a single, well-matched kit for a test drawer, then expanding to full kitchen or bathroom installations if the results meet your expectations.