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Railing Planters Over the Railing Planters Rail Top Planters Freestanding Porch Planters Cedar Raised Planters Universal Rail Hooks for PVC Boxes Deck Rail Hooks for PVC Boxes Universal Rail Hooks for Metal Boxes PVC Window Boxes Wrought Iron Window Boxes Self-Watering Window Boxes Window Box Brackets Window Box Filter Fabric Custom Window Boxes PVC Window Boxes Extra Large Outdoor Planters PVC Planters Deck Rail Planters Self-Watering Window Boxes Wrought Iron Window Boxes Cedar Window Boxes Window Box Brackets Wrought Iron Window Boxes Vienna Deluxe Window Boxes Nottingham Deluxe Window Boxes Savannah Deluxe Window Boxes Springfield Deluxe Window Boxes Canterbury Deluxe Window Boxes Oxford Deluxe Window Boxes Metal Aluminum Liners Real Copper Liners 8"H x 7.25"W PVC Liner with Copper Patina Coating 8"H x7.25"W PVC Liners for Our Metal Window Boxes Self Watering Reservoirs Universal Rail Hooks for Metal Boxes Window Box Liners 7"H x 6"W Light Duty Inserts for Standard Size Window Boxes 8"H x 7.5"W Light Duty Inserts for XL Size Window Boxes Planter Liners 8"H x 8"W x Length Architecture Grade PVC Liners 10"H x 10"W x Length Architecture Grade PVC Liners 12"H x 12"W x Length Architecture Grade PVC Liners Copper Tone Aluminum Liners Silver Tone Aluminum Liners Brown Tone Aluminum Liners 8"H x 7.25"W PVC Liners for Our Metal Window Boxes 8"H x 7.25"W PVC Liner with Copper Patina Coating Real Copper Liners Wrought Iron Window Boxes with Copper Liners Filter Fabric Self Watering Systems Window Box Brackets Window Box Brackets Cedar Corbels for non-Window Box applications PVC Corbels for non-Window Box applications Cedar Products All Cedar Products Cedar Brackets Sort by Projection (Biggest to Smallest) Cedar Gables Cedar Corbels Cedar Braces Cedar Planters Cedar Window Boxes Cedar Shutters Cedar Mantels Cedar Raised Planters Cedar Rafter Tails Cedar Plugs and Hardware PVC Bracket and Corbels Cedar Brackets Sort by Projection View Cedar Corbels Cedar Gables Cedar Corbels Sort Corbels by Projection View Cedar Brackets Cedar Braces Sort By Projection View Cedar Brackets Cedar Exterior Shutters Cedar Planters Cedar Window Boxes Cedar Mantel Beams Cedar Mantel Corbels Cedar Rafter Tails Custom Cedar Brackets and Corbels Exterior Shutters PVC Exterior Forever Shutters Cedar Exterior Shutters Exterior Shutter Hardware Complete Sets Steel Exterior Shutter Hinges and Shutter Dog Stays Complete Sets Stainless Steel Exterior Shutter Hinges and Shutter Dog Stays Shutter Install and Measure Custom Exterior Shutters Exterior Shutter Colors Cutout Exterior Shutters Call 888-505-7715 Call 888-505-7715 About Us My Account YourCart MENU Home Installation Ideas and Pictures Contact Us View Cart Window Boxes Window Boxes Charleston Window Boxes Traditional Window Boxes Modern Window Boxes Charleston Black Window Boxes Farmhouse PVC / Cedar Window Boxes Daisy Window Boxes Cunningham Window Boxes Tapered Panel Window Boxes Boston Window Boxes Wolfgang Window Boxes Shaker Window Boxes York Window Boxes Diamond Lattice Window Boxes Wrought Iron Window Boxes Window Box Brackets Deck Rail Planters PVC Planters PVC Window Headers / Pediments Shop Window Boxes by Size 24" Window Boxes - 2 Foot Window Boxes 30" Window Boxes 36" Window Boxes - 3 Foot Window Boxes 42" Window Boxes 48" Window Boxes - 4 Foot Window Boxes 54" Window Boxes 60" Window Boxes - 5 Foot Window Boxes 66" Window Boxes 72" Window Boxes - 6 Foot Window Boxes 78" Window Boxes 84" Window Boxes - 7 Foot Window Boxes 96" Window Boxes - 8 Foot Window Boxes 108" Window Boxes - 9 Foot Window Boxes 120" Window Boxes - 10 Foot Window Boxes Custom Window Boxes Outdoor Planters New Age Modern Planters Charleston Planters Cape Cod Planters Manhattan Deluxe Planters Cedar Planters Pennsylvania Deluxe Planters Daisy Planters Shiplap Deluxe PVC Planters Raised Planters Cedar Planters Hanging Rail Planters Rail Top Planters Cunningham Planters Lattice Planters Large Outdoor Planters Large Modern Planters Large Charleston Planters Large Cape Cod Planters Large Manhattan Deluxe Planters Large Farmhouse PVC / Cedar Planters Large Pennsylvania Dleuxe Planters Large Daisy Planters Large Shiplap Deluxe Planters Large Cunningham Planters Large Lattice Planters Rectangular Planters Modern Rectangular Planters Charleston Rectangular Planters Cape Cod Rectangular Planters Manhattan Deluxe Rectangular Planters Farmhouse Rectangular PVC / Cedar Planters Pennsylvania Deluxe Rectangular Planters Daisy Rectangular Planters Shiplap Deluxe Rectangular Planters Cunningham Rectangular Planter Boxes Large Outdoor Planters Lattice Rectangular Planter Boxes Planters on Wheels Rail Planters Square Planters Square Planters Planters on Wheels New Age Modern Planters Charleston Planters Manhattan Deluxe Planters Pennsylvania Deluxe Planters Shiplap Deluxe Planters Farmhouse PVC / Cedar Planters on Wheels Daisy Planters Cape Cod Planters Cunningham Planters Lattice Planters Self-Watering Window Boxes Charleston Window Box with Self-Watering Option Window Box Water Reservoirs Self Watering Planters Self-Watering Cedar Window Boxes Traditional Window Box with Self-Watering Option Self-Watering Deck Rail Planters Charleston (Black) Window Box with Self-Watering Option Modern Window Box with Self-Watering Option Self-Watering Wrought Iron Window Boxes Self-Watering Window Box Liners Daisy Window Box with Self-Watering Option Cunningham Window Box with Self-Watering Option Tapered Panel Window Box with Self-Watering Option Self-Watering Boston Window Boxes Self-Watering Wolfgang Window Boxes Self-Watering York Window Box Self-Watering Lattice Window Boxes Deck Railing Planters Over the Railing Planters Rail Top Planters Freestanding Porch Planters Cedar Raised Planters Universal Rail Hooks for PVC Boxes Deck Rail Hooks for PVC Boxes Universal Rail Hooks for Metal Boxes PVC Window Boxes Wrought Iron Window Boxes Self-Watering Window Boxes Window Box Brackets Window Box Filter Fabric Custom Window Boxes PVC Window Boxes Extra Large Outdoor Planters PVC Planters Deck Rail Planters Self-Watering Window Boxes Wrought Iron Window Boxes Cedar Window Boxes Window Box Brackets Wrought Iron Window Boxes Vienna Deluxe Window Boxes Nottingham Deluxe Window Boxes Savannah Deluxe Window Boxes Springfield Deluxe Window Boxes Canterbury Deluxe Window Boxes Oxford Deluxe Window Boxes Metal Aluminum Liners Real Copper Liners 8"H x 7.25"W PVC Liner with Copper Patina Coating 8"H x7.25"W PVC Liners for Our Metal Window Boxes Self Watering Reservoirs Universal Rail Hooks for Metal Boxes Window Box Liners 7"H x 6"W Light Duty Inserts for Standard Size Window Boxes 8"H x 7.5"W Light Duty Inserts for XL Size Window Boxes Planter Liners 8"H x 8"W x Length Architecture Grade PVC Liners 10"H x 10"W x Length Architecture Grade PVC Liners 12"H x 12"W x Length Architecture Grade PVC Liners Copper Tone Aluminum Liners Silver Tone Aluminum Liners Brown Tone Aluminum Liners 8"H x 7.25"W PVC Liners for Our Metal Window Boxes 8"H x 7.25"W PVC Liner with Copper Patina Coating Real Copper Liners Wrought Iron Window Boxes with Copper Liners Filter Fabric Self Watering Systems Window Box Brackets Window Box Brackets Cedar Corbels for non-Window Box applications PVC Corbels for non-Window Box applications Cedar Products All Cedar Products Cedar Brackets Sort by Projection (Biggest to Smallest) Cedar Gables Cedar Corbels Cedar Braces Cedar Planters Cedar Window Boxes Cedar Shutters Cedar Mantels Cedar Raised Planters Cedar Rafter Tails Cedar Plugs and Hardware PVC Bracket and Corbels Cedar Brackets Sort by Projection View Cedar Corbels Cedar Gables Cedar Corbels Sort Corbels by Projection View Cedar Brackets Cedar Braces Sort By Projection View Cedar Brackets Cedar Exterior Shutters Cedar Planters Cedar Window Boxes Cedar Mantel Beams Cedar Mantel Corbels Cedar Rafter Tails Custom Cedar Brackets and Corbels Exterior Shutters PVC Exterior Forever Shutters Cedar Exterior Shutters Exterior Shutter Hardware Complete Sets Steel Exterior Shutter Hinges and Shutter Dog Stays Complete Sets Stainless Steel Exterior Shutter Hinges and Shutter Dog Stays Shutter Install and Measure Custom Exterior Shutters Exterior Shutter Colors Cutout Exterior Shutters Home > Window Box Liners > Planter Liners > 18" x 18" x 18" Liner Alternative Views: Starting Price: $234.99 Sale Price: $164.99 Price with Selected Options: $164.99 Availability:: PEAK SEASON: SHIPS FULLY ASSEMBLED in approximately 2-3 business days (Built to Order by Carpenters) Product Code: LIN-LINER-18X18X18 Drain Holes: Yes Please! No Drain Holes [Add $24.00] Large Self-Watering Reservoirs: No Thanks Reservoir System [Add $32.00] Qty: Description Technical Specs Available in 31 Sizes (Length x Height x Width): View All Sizes and Pricing 24"Length x 8"Height x 8"Width 30"L x 8"H x 8"W 36"L x 8"H x 8"W 42"L x 8"H x 8"W 48"L x 8"H x 8"W 54"L x 8"H x 8"W 60"L x 8"H x 8"W 66"L x 8"H x 8"W 72"L x 8"H x 8"W 24"L x 10"H x 10"W 30"L x 10"H x 10"W 36"L x 10"H x 10"W 42"L x 10"H x 10"W 48"L x 10"H x 10"W 54"L x 10"H x 10"W 60"L x 10"H x 10"W 66"L x 10"H x 10"W 72"L x 10"H x 10"W 24"L x 12"H x 12"W 30"L x 12"H x 12"W 36"L x 12"H x 12"W 42"L x 12"H x 12"W 48"L x 12"H x 12"W 54"L x 12"H x 12"W 60"L x 12"H x 12"W 66"L x 12"H x 12"W 72"L x 12"H x 12"W 14"L x 14"H x 14"W 16"L x 16"H x 16"W 18"L x 18"H x 18"W 20"L x 20"H x 20"W Custom Size Our Flower Window Boxes TM architectural grade liners can be used with wooden and metal window boxes as inserts or as a stand alone product. Not for use inside our standard PVC window boxes, instead use our light duty liners (see below). They come standard in white, but will hold any exterior latex for up to 15 years. Easy and convenient self-watering reservoir system can be added and will cut your watering frequency by 3-4 fold saving you time and making maintenance for vacations and those with busy lifestyles easy! Dimensions: 18"L x 18"H x 18"W 5/8 inch thickness Commercial grade quality 100% Rot Proof PVC and LIFETIME GUARANTEED Heavy-duty liner is 5/8" thick and can also act as a stand alone item Available in 31 Sizes of Various Length, Height, and Width, plus Custom Heavy Duty Liners are not compatible inside our PVC window boxes (optional light duty inserts can be used with our PVC window boxes for easier planting - see below) Patented self-watering reservoir option reduces watering by 3-4x fold Manufacturer Direct Pricing Insect-resistant and impenetrable to water Drain holes are placed at the bottom for easy drainage Featured on The Today Show, calling them "the last window boxes you will ever buy!" Custom Lengths available, Click for a FREE Estimate or call us at 888-505-7715 today! View a Different Style Liner Light Inserts for our 8"High Window Boxes Light Inserts for XL 10"High Window Boxes Planter Liners Copper Tone Aluminum Liners Silver Tone Aluminum Liners Bronze Tone Aluminum Liners Real Copper Liners PVC Liners for Metal Boxes Copper Patina PVC Liners Related Products: Wrought Iron Window Boxes PVC Window Boxes Cedar Window Boxes Black Window Boxes PVC Planters Rail Planters Outside Dimensions = 18"W x 18"W x 18" Tall Related Items 36"L x 12"H x 12"W Window Box Liner 30"L x 12"H x 12"W Window Box Liner 16" x 16" x 16" Liner 42"L x 12"H x 12"W Window Box Liner Sale Price: $143.99 Sale Price: $126.99 Sale Price: $134.99 Sale Price: $160.99 20" x 20" x 20" Liner 48"L x 12"H x 12"W Window Box Liner 30"L x 10"H x 10"W Window Box Liner 24"L x 8"H x 8"W Window Box Liner Sale Price: $199.99 Sale Price: $176.99 Sale Price: $103.99 Sale Price: $61.99 Share your knowledge of this product. Be the first to write a review » 0.0024.000.0032.00