Best custom pinch pleat drapery panels under $3,000

Start with the ALVA Pinch Pleat Drapery – Customized. It's the closest thing to what you asked for: made to your measurements, with a 4" buckram heading and fullness you choose (200%, 250% or 300%) — pick 250–300% if you want the deep, gathered look of a true double or triple pleat. Note that none of these list a double or triple pleat header specifically; they're single pinch pleats, so confirm the pleat style with the maker before ordering.

Who the others suit:

• The Home Depot custom pinch pleat panels — a straightforward made-to-measure route with blackout lining, good for bedrooms.
• Indulgence Decor's linen pinch pleat with trim — if you want a decorative edge and a softer, more decorative finish.
• HushLoom's Lille linen-look blackout — best if you want a ready-made pair quickly and cheaply rather than true custom sizing.
• Loom Decor and McGee & Co. — for a designer fabric look in fixed sizes rather than made-to-measure.

Skip the ready-made pairs if the pleat quality is the point: they're standard single pleats and fixed lengths.