Find the right 72-inch window box to elevate your outdoor space. This guide covers five top choices, each selected for durability, ease of installation, and long-lasting appeal. Best for homeowners seeking large-scale, low-maintenance planters that can anchor a front porch, balcony, or sunroom exterior. The top picks include built-in water reservoirs, UV resistance, and customizable lengths for DIY-friendly setups. Below, compare features, best uses, and potential limitations to help you choose with confidence.
| Product | Brand | Length x Width x Height | |
|---|---|---|---|
| Nantucket 6ft Window Box (Black) | Mayne | 72 in L x 11.6 in W x 10.2 in H | Built-in 6.5 gal water reservoir; UV-resistant resin |
| Nantucket 6ft Window Box (White) | Mayne | 72 in L x 11.6 in W x 10.2 in H | UV-resistant; built-in water reservoir |
| 72in Galvanized Tapered Window Box | Generic | 72 in L x 8 in W x 7 in H | Powder-coated steel; rust-resistant |
| Yorkshire Window Box, 6 ft (White) | Mayne | 72 in L x 12 in W x 10 in H | High-quality vinyl; easy to assemble and customize |
| Mayne Fairfield 5ft Window Box | Mayne | 60 in L (approx.) | Self-watering, UV-stable, steel mounting hardware |
Mayne Nantucket 6ft Window Box – Black

This 72-inch window box uses 100% high-grade polyethylene resin and includes built-in UV inhibitors to resist fading. The double-wall design adds insulation for soil, helping plants stay moist and healthy between waterings. Best for homeowners wanting a long-lasting, low-maintenance planter with a classic look. Choose this if you prefer a traditional black finish and built-in water reservoir for easy irrigation. Caution: The size and weight of the finished product may require solid mounting hardware and precise wall support.
Mayne Nantucket 6ft Window Box – White

White Nantucket matches the black version with 72 inches of planting space and the same built-in 6.5 gallon water reservoir. It’s best for modern white or light-finish exteriors seeking a cohesive, sunlit look. The UV-stabilized resin helps maintain color in bright sun. Opt for this if you want a brighter, cleaner aesthetic and straightforward maintenance. Limitation: White finishes may show dirt more readily, requiring periodic cleaning to maintain crisp lines.
72in Galvanized Tapered Window Box

This 72-inch window box is made of steel, hand-made for durability, and powder-coated to resist rust. The tapered design concentrates soil space toward the center, which can support fuller plant displays. Best for steel-and-metal aesthetics or industrial-modern exteriors. Choose this if you need a rugged, long-lasting option and are comfortable with a metal planter. Limitation: Heavier than resin equivalents, requiring stronger mounting and possibly more secure installation.
Yorkshire Window Box, 6 ft (White)

Yorkshire Window Box offers durability with high-quality vinyl, ready-to-assemble components, and 6-foot length. It is highly customizable for DIY projects—cut to desired length and paint as needed. Best for buyers who want a modular, paint-ready look and easy assembly. Better for those who prefer a light, plastic-inspired finish. Limitation: May require tools and time to cut to length and assemble, which could extend setup for first-time buyers.
Pemberly Row 6ft Weatherproof Vinyl Window Box

With a double-wall vinyl design and built-in water reservoir, this 6-foot window box emphasizes weather resistance and easy mounting. Best for users who want a sturdy, low-maintenance planter with simple assembly. Choose this if you value a clean white finish and a fully customizable length. Limitation: Vinyl sizing can limit flexibility if you need exact 72-inch matching across multiple boxes.
Garden Artisans 72 in Window Hayrack Planter

This 72-inch hayrack planter features a steel basket coated in black PVC for rust protection and two compartments, designed for a bold, wide display. Best for exterior walls with ample mounting support and a modern, industrial look. Choose this if you want a substantial, statement piece. Limitation: The wagon-style design may require more vertical space and securing hardware than standard window boxes.
Buying Guide: Key Considerations For 72-Inch Window Boxes
- Material matters: Resin, vinyl, steel, and zinc-coated metals each offer different durability, weight, and upkeep. Choose based on climate and maintenance preferences (UV exposure, rainfall, freeze-thaw cycles).
- Water management: Built-in reservoirs simplify irrigation, but consider plant types (drought-tolerant vs. moisture-loving) and drainage needs for each model.
- Mounting and support: Large 72-inch boxes demand sturdy mounting hardware and wall support. Check included hardware and wall compatibility before installation.
- Customization vs. ready-to-use: DIY-friendly models allow length adjustments, but require time and tools. Pre-fabricated options offer quick setup with fewer steps.
- Aesthetic fit: Consider color, finish, and profile to complement your home’s architecture and other planters. Neutral tones blend with most exteriors, while bold finishes make a statement.
Frequently Asked Questions
- What is the typical installation process for a 72-inch window box?
– Most come with mounting brackets and hardware. Measure your wall, ensure studs or solid backing, and follow the manufacturer’s instructions for level mounting and securing supports. - Which 72-inch window box is best for busy homeowners?
– Models with built-in self-watering reservoirs and UV-resistant resin coatings are ideal for low maintenance and long color retention. - Can 72-inch window boxes be shortened?
– Some vinyl and aluminum options offer length customization; others require selecting the exact length as produced. Always verify with the product page or manufacturer. - Which finishes resist fading in sun exposure?
– UV-stabilized resins and vinyl finishes generally resist fading better than bare metal or untreated plastic. - Do these window boxes support heavy plantings?
– Yes, but ensure the mounting hardware, wall backing, and soil weight are considered to prevent sagging or detachment. - Are 72-inch window boxes suitable for balconies?
– Yes, provided the balcony has adequate load-bearing capacity and weather exposure is monitored.