Step up from the PVC DIY kit and you land at premium enclosures like the SIG8, which runs $1,799.99 direct from Shop Indoor Golf (independently confirmed in the $1,600-$2,000 range at two other retailers) for an 8’4” x 8’4” x 5’ footprint with a 7’7” x 7’7” SIGPRO Premium impact screen included. The frame is aluminum rather than PVC, which assembles faster and holds its shape better under years of daily net impact than a flat-packed DIY kit.

Worth flagging up front: some listings and older reviews cite the SIG8’s depth as considerably deeper than 5 feet, sometimes conflating the frame’s own footprint with the total swing-bay length a golfer actually needs (tee position to screen, plus room behind for a full backswing). The 5-foot figure above is the frame and screen structure itself, verified directly against Shop Indoor Golf’s own product listing; plan your actual room depth around your swing, not just the frame.

A spacious garage interior with storage shelves and tools along the walls — An 8'4" x 8'4" x 5' footprint needs a real garage bay to work with. Most single-car and larger two-car spaces clear it without giving up all the surrounding storage. *hi room via Pexels. Pexels License.*

What comes with the frame

The 8’4” x 8’4” frame dimensions are sized to match Shop Indoor Golf’s own SIGPRO screen line (7’7” wide by 7’7” tall, 10’8” on the diagonal), so the frame and screen ship as a coordinated system rather than two parts a buyer has to square up independently. The screen fills roughly 80% of that frame area with projected image, which is what gives the SIG8 its immersive feel compared to a smaller or mismatched screen-and-frame pairing. Ceiling clearance matters more than the enclosure’s own 8’4” height suggests: Shop Indoor Golf recommends 9 feet or more overhead depending on your actual swing, since a tall player with a full-extension backswing needs real headroom above the frame itself, not just above the screen.

A crew installing an exhaust fan through a tent's steel-tubed frame and fabric skin — Frame and fabric skin as a matched system, the same principle behind a matched frame-plus-screen enclosure sold as one purchase instead of two separately sourced parts. *NAVFAC (Naval Facilities Engineering Command) via Wikimedia Commons. CC BY 2.0.*

The SIG8 is positioned as the smallest enclosure in Shop Indoor Golf’s Signature Series, sitting below the larger SIG10 and SIG12 for buyers with more garage depth to work with. Anyone whose swing needs more lateral or vertical room than an 8’4” square frame allows should look at those bigger siblings rather than force-fitting the SIG8; the extra frame cost scales with size, but the underlying construction (aluminum tubing, color-coded push-pin connectors, matched screen) is the same across the line.

A standard single-car garage (roughly 12 feet wide, 20+ feet deep) comfortably clears the SIG8’s 8’4” width with room to spare on either side for a golf cart, storage shelving, or a walk-around path, which is the real reason this size dominates home installs over the wider SIG10/SIG12. Ceiling height is the more common bottleneck than floor space: a two-car garage with an 8-foot ceiling, common in older housing stock, may not clear the recommended 9 feet for a full-extension driver swing, and that’s a harder problem to solve than swapping enclosure sizes. Measure the actual swing clearance in your space, driver in hand, arms fully extended overhead, before ordering any enclosure in this line.

The netting and containment question

Whatever the frame material, the enclosure’s real job is containing a full-swing mis-hit without transferring the impact back into the frame. The SIGPRO Premium screen is rated to withstand impacts up to 250 MPH, well above any realistic clubhead or ball speed a home simulator sees, and it’s built from a triple-layer material with double-stitched vinyl edges rather than a single sheet. Protective foam padding wraps the top, bottom, and both sides inside the frame, and a separate vinyl surround closes off the gaps around the screen itself, so a badly struck shot that clips the edge of the screen still lands on padded surface rather than bare aluminum tubing.

A golf driving range viewed through its protective catch netting — Catch netting doing its job at commercial scale. A home enclosure's netting and surround exist to contain exactly this kind of stray shot. *Martin Addison via Wikimedia Commons (geograph.org.uk). CC BY-SA 2.0.*

Shop Indoor Golf also sells the SIGPRO screen in two finishes worth knowing about before ordering: a white Premium finish for rooms that stay dark during use, and a gray Premier finish designed to hold contrast better in a room with ambient daylight or overhead lighting you can’t fully kill. Picking the wrong one for your room’s actual lighting is a common, avoidable mistake, since the gray option looks noticeably duller in a properly darkened bay while the white option can wash out under bright fluorescents.

For most mid-tier and premium builds, this is the enclosure line item: a pre-sized frame that pairs cleanly with a matched impact screen, versus the DIY approach of sourcing frame and screen separately and dialing in the screen tension yourself. Both get you to the same working enclosure. The extra money buys a cleaner finish, color-coded push-pin assembly that Shop Indoor Golf markets as tool-light, and fewer weekend hours spent getting that tension right, not better performance once it’s built. If budget is what’s actually constraining the build, the DIY kit isn’t a step down.

Hand tools organized on a workshop wall — The tool wall a DIY build still needs. A pre-fabricated aluminum frame cuts the assembly time, not the basic hand-tool list. *todd kent via Unsplash. Unsplash License.*