The big brother of the 1SKB-iSF2U! This case features a virtually indestructible, waterproof injection molded shell that is lighter, stronger, and more affordable than the previous 4U Studio Flyer, and includes innovative molded-in front and rear rack rails that provide even more security and durability for sensitive studio equipment during travel. As a larger Studio Flyer option, The 1SKB-iSF4U offers a 4U rack mount measuring 15″ from front rail to rear rail which safely accommodates deeper equipment, such as the Universal Audio Apollo audio interface. It also provides a 21″ x 15.5″ adjustable work surface with ample room for laptops or monitors, and a specially molded exterior pattern that stacks securely with all SKB Roto Racks for maximum transport convenience.
Other standard features include improved quiet-glide wheels, an easy-to-operate one-button pull handle, and TSA-accessible locking trigger latches. Like all SKB Injection Molded cases, the 1SKB-iSF4U is proudly made in the USA and comes with an Unconditional Lifetime Warranty.
Features
Waterproof & impact-resistant
Innovative molded-in front/rear rack rails
4U rack and laptop combo case
8 rubber cleats to hold laptop into position during transportation
15″ front rail to rear rail depth
Laptop work surface: 21″ x 15.5″
Quiet-glide wheels & pull handle
Made in the USA
Unconditional Lifetime Warranty
Specifications
Exterior Depth
24.00 in
60.96 cm
Exterior Width
18.50 in
46.99 cm
Exterior Height
12.75 in
32.39 cm
Rack Space Units Total
4
4
Rack Depth Rail to Rail
15.00 in
38.10 cm
Shipping Weight
24.18 lb
10.97 kg
Product Weight
22.15 lb
10.05 kg
![19" Blanking Panels](https://avstore.co.nz/wp-content/uploads/2026/04/cbc5bc496248fdffadb12f934382e110_19"_Blanking_Panels_2695-300x98.jpeg)
Anonymous (verified owner) –
Great online service. Fast delivery after I ordered!
Anonymous (verified owner) –
Case is perfect for what we needed. Excellent sales advice. Quick delivery.