BTP7186 PVC Transom Sill

It serves as the structural and functional bridge between the door header and the transom glass above it.
The PVC Transom Sill is a critical horizontal component located at the base of a transom window. In high-performance entry systems, the transom sill is designed to shed water away from the door unit while providing a clean, architectural transition.

BTP7186 PVC Transom Sill

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Creates a distinct visual line between the top of the door and the bottom of the window, and designed with a built-in “slope” or “wash,” the PVC Transom Sill ensures that rainwater and condensation drain outward, protecting the door frame and interior from leaks.

Model Number BTP7186
Size 1-1/4″ x 6-9/16″
Color White standard (other colors customizable)
OEM/ODM Acceptable
Processing Service Cutting
Surface Finish Smooth

How To Choose

Features

①. Superior Water Management: Designed with a built-in “slope” or “wash,” the PVC Transom Sill ensures that rainwater and condensation drain outward, protecting the door frame and interior from leaks.

②. Rot-Proof Performance: Because it sits in a horizontal position where water often pools, being made of high-density cellular PVC is a massive advantage over wood. It will never rot, peel, or absorb moisture.

③. Structural Rigidity: Engineered to support the weight of the transom glass assembly without sagging, ensuring the door header below remains straight and functional.

④. UV Resistance: Formulated to withstand constant direct sunlight exposure at the top of the entryway without yellowing or becoming brittle.

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Installation Guide

①. Cutting: Using standard woodworking equipment. For power miter saws, carbide tooth blades are recommended. Do not use fine-tooth metal-cutting blades, do not use plywood or metal blades because the kerf of the blade is too thin and can cause heat buildup in the material. To maintain a smooth edge, support the trim across its entire length when you cut it.
②. Drilling: Do not use bits made for rigid pvc, avoid heat buildup from excessive friction, and remove the shavings from the drill hole frequently.
③. Gluing: Temperature variation will cause pvc trim board and mouldings to expand and contract. To prevent open miter joints, we highly recommend gluing all joints using a quality instant glue or pvc cement, always test adhesive brands before using. You should use a combination of glue and mechanical fasteners, such as “ glue and screw”, only glue is not enough to ensure a long-term bond.

Installation Guide

④. Painting: BOTO Trim products does not require painting but, like any pvc product, it will weather over time and painting will enhance these beautiful products and help them maintain color consistency for many years. 100% acrylic latex paint is recommended.
⑤. Nailing:Use corrosion-resistant, smooth shank, annular threaded or spiral type nails, at least 6d in size and long enough to penetrate at least 1 1 /4″ into the substrate, stainless steel or hot-dipped galvanized nails or screws are recommended. Nails should be placed 12″ on center and, if possible, 3 /4″ from each edge.
⑥. Cleaning:Use a soft bristle brush and a bucket of soapy water to remove normal dirt and grime. For especially stubborn stains, use a cleaner suitable for pvc products. Your local building materials retailers can supply several different brands, better test any cleaners before use.

Applications

Door Jamb 1 Door Jamb 2 Door Jamb 3 Door Jamb 4

ABOUT BOTO

We are a leading manufacturer and supplier in the PVC extrusion industry. Our strategically located production bases in China and Malaysia span a total area of 13,000 square meters. We offer a comprehensive portfolio of PVC building materials, organized across four key sectors:PVC Sheet, PVC Trim & Moulding, Vinyl Fencing & Railing, and Vinyl Flooring.

Product QC

Color consistency

Colorimeter

Flatness Check 1

Flatness Check 2

QC Batch Number

Moulding Bowing Check

Size Check

Thickness Consistency

Product Packaging

Certificates

Take More Info

Factory Capabilities:
BOTO Plastics CO., LTD is a professional PVC sheet
manufacturer with modern production lines for extrusion,
calendering, and color matching. We offer OEM & ODM
services with fast turnaround for global clients.

Customization Process:
1.Select type (rigid/flexible), thickness, and color
2.Confirm sheet size and surface finish
3.Receive sample for approval
4.Proceed to bulk production and packaging
5.Worldwide shipping with quality assurance

FAQ

We offer a comprehensive portfolio of premium PVC extruded products which are used for various applications such as signage and printing, cabinet making, outdoor furniture, agriculture, RV and building materials, organized across four key sectors: PVC Sheets, PVC Trim & Moulding, Vinyl Fencing & Railing, and Vinyl Flooring.
Our moulding catalog covers most of the popular industry sizes and profiles. If your architectural project requires a special size or unique profile, our in-house tooling team can open a new mold specifically for you.
Our standard and most popular color is a crisp white. However, we have extensive color-matching capabilities and can produce products in brown, black, red, blue, green, yellow, orange, gray, and more.
What types of fasteners are recommended for BOTO Moulding and Trim Boards?
No, BOTO Moulding and Trim Boards are non-load-bearing and cannot be used in structural applications. They are designed strictly as decorative components. For any structural requirements, proper wood or metal load-bearing components must be incorporated. Always consult with your architect or builder to determine structural needs before installation.
No, BOTO Moulding and Trim Boards usually do not require paint for protection. However, they can be easily painted if you wish to achieve a custom color match for your project or to neatly conceal filled nail holes.

Contact Us

We’re here to help you with whatever you need.

info@botoplastics.com

+86 20 2816 8611

China Factory

Yiyuan Economic Development Zone Zibo city,Shandong Province China

Malaysia Factory

Jalan FZ 2-P8, Port Klang Free Zone, 42920 Pulau Indah, Selangor, Malaysia

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