
Sixteen ALU 40 slats cut to 39 in. for 4 ft x 6 ft DIY pedestrian gates. The 4 in. horizontal profile is set with a minimum 3/8 in. gap for a clean, modern slatted look.
4x6 aluminum gate slats, pre-cut to 39 in.
This box contains 16 ALU 40 slats cut to 39 in., the slat box specified in the Alu 40 4×6 ft. DIY pedestrian gate kit. These 4×6 aluminum gate slats run horizontally across the frame with a minimum 3/8 in. gap, giving the familiar modern slat look while letting some light and air through.
Pre-cut slats mean every board arrives at the same length, ready for a 4 ft wide DIY gate frame. It is a straightforward way to build a gate that matches an ALU 40 horizontal fence, or to refresh the infill on an existing frame of the same size.


ALU 40 black slat pedestrian gate project
What's in the box
| Slats | 16 pcs ALU 40 |
|---|---|
| Cut length | 39 in. |
| Wall | 0.047 in. |
| Material | Aluminum 6063-T6 |
| Finish | AAMA 2604 Super-Durable Powder Coating |
| Colors | Black, Bronze or White |
| Spacing | Minimum 3/8 in. gap |
No frame, hinges or posts are included in the slat box.

The ALU 40 look
ALU 40 is the 4 in. slat in the Aluglobus Aluminum Systems range. The wider face gives fewer horizontal lines than narrow slats, and the 3/8 in. minimum spacing keeps the gate from looking like a solid wall. It is a popular match for horizontal aluminum fences around patios, side yards and front entries.
- 6063-T6 aluminum: no rot, no warping, no sealing.
- AAMA 2604 super-durable powder coating for an even, long-lasting color.
- Available in Black, Bronze and White.
Which gate slat box do you need?
Choose by frame width. For a 6 ft x 6 ft gate, use the ALU 40 gate slat box, 16 pcs, 62 in.. If you want full privacy instead of a gap, the ALU 60 T&G gate slat box, 39 in. interlocks with no gap. Confirm your opening width and frame size before ordering, and confirm with our team if you are fitting a frame not listed here.


Complete the gate
The Alu 40 4×6 ft. DIY pedestrian gate kit (GAP 3/8 in.) combines this box with the DIY-only 4' x 6' gate frame kit and a 7/8 plug. To build it piece by piece, start with the 4' x 6' DIY gate frame kit, then choose a post option for a wall or concrete-footing install.

ALU 40 black slat pedestrian gate project
Material & finish
What it is made of
(Gate Slat Box) ALU 40 Slat – 16pcs (39in) is made from aluminum 6063-t6, finished with AAMA 2604 Super-Durable Powder Coating in black, bronze, white.
6063-T6 is an architectural aluminum alloy made for extruded profiles. It gives clean, consistent shapes and takes a powder coating evenly, which is why it is widely used for fences, gates and other exterior building products.
AAMA 2604 is the American Architectural Manufacturers Association specification for high-performance organic coatings, powder coatings included, on aluminum extrusions. It sets test requirements for outdoor color and gloss retention, chalking and corrosion resistance.


Where it is used
Where this part goes
Listed use: Slats for 4 ft x 6 ft DIY gate kits.
Ordering
Ordering tips
- Sold as: 16 pcs per box.
- Size: 39 in. (listed as 3.23 ft in the gate kits).
- Color options: Black, Bronze, White.
